Quantum Crops is dead! Long live Quantum Crops!

After fiddling with Blogger and Wordpress for a while I have decided to stop using Blogger and import this blog to Wordpress. I believe that Wordpress is sexier since it has LaTeX support. So this blog will remain like this forever.

The new home of QC is here: http://melvineloy.wordpress.com .

End of the first part of the summer

In this post I will try to convince myself that I have a lot of stuff to do and that I should start working ASAP.

Merideth left today. This brings an end to four weeks of rest and relaxation. I should not feel bad about anything since I am able to say I have done a lot of stuff, including

• Going to NYC many times,
• Eating a lot of bagels,
• Eating a lot of pizza slices,
• Meeting some friends from PR at NYC,
• Visiting many museums,
• Watching a lot of movies and TV boxed sets,
• Eating a lot of dessert.

And maybe more... But sometimes I felt guilty, like if I should have been doing something more productive related to me learning some physics during the summer.

It was not all fun, since I spent some time discussing some physics with my girlfriend. She was thinking about (as she calls it) the "rain drop problem". The idea is to calculate the optimal speed a person should have in order to minimize wetness under falling rain. My girlfriend argues that running causes some sort of effective cross section and one calculate the amount of drops one encounters while running a specific distance. I am trying to convince her to post her result here so stay tuned.

I have the rest of the week and next week to work on stuff. That stuff includes reading some of Srednicki's QFT and trying to go through some section of Carroll's relativity book. I kind of want to read the appendices on non-coordinate basis and sub-manifolds and hypersurfaces. Hopefully some of this will happen.

Another thing on my mind are next semester's courses. I am currently registered in field theory, relativity and group theory. This might be to much to bite on, but I need to take something touching on breadth, so I also registered on graduate laboratory. But I have been thinking that this lab course might be REALLY to much. So an option would be to take a course on atomic physics that will count for breadth and then take the lab class during the spring term.

Yet one more thing on mind is the comprehensive examination. I have the opportunity to take that exam this coming September. The thing is, I AM NOT PREPARED FOR THAT. So I could try reading a lot of stuff during the remaining days, but I really do not think that is going to take me anywhere. There is a lot of stuff to cover in those exams, most of the stuff that I do not have any idea.

So I believe that the best course of action would be to take that atomic physics course, and really try the comprehensive exam during the January offering and take the graduate laboratory during the spring term, along with field theory 2, another breadth course and maybe Warren Siegel's advanced field theory.

A minor concern is getting a new computer, and the money for it. The question would be, another Dell or a new Apple? 

Particle Physics

Yesterday I went through some of the comprehensive examinations. In total I had three exams, which meant 36 questions. Out of those, I only had a good idea about one of them:  a question about covariant derivatives and the curvature tensor. In fact, I do not think I can work out that problem...

Since I've noticed there were so many questions about particle physics, and I do not know much about particles in general, so I tried reading some of Huang's Quarks, Leptons and Gauge Fields. It is a bit full of jargon, so I have a feeling I need another good source.

Besides particles, I have not being up to much. Just watching lots of ALIAS and Netflix. Oh well...

Done with Deathly Hallows

Today I finished reading the last book of the Harry Potter series. I am happy to say that none of my predictions turned out to happen. It was a good book. The epilogue was kind of disappointing, but anyways. I guess now my amusement will come from Netflix...

The wait is almost over...

I cannot wait anymore to read the last book of the Harry Potter series. Almost 2 hours and 25 minutes! I guess I will not blog now for a while. Tomorrow I will go to Central Park for some outside reading. Should be fun!

In the meantime I have been reading an article on torsion gravity. It is kind of interesting, since the article claims that torsion might be important to understand spin angular momentum in general relativity theory. More on this later.

Closure

I feel like summarizing my thoughts, yet again.

Maybe it is because tomorrow I will formally start working. Or maybe it is that I feel like I am done with relativity for the summer.

Well, concerning relativity. I have not gotten yet to Einstein's Equation! I guess that I am not done with relativity until I discuss this part. So maybe I will stop reading Sean Carroll's book after the 4 chapter. I feel like I will be learning most of the physics during this coming semester, so I want to cover more mathematics during the summer. That is why I have been concerning more with topics about manifolds and geometry than with specific metrics like the example of the flat, expanding metric in the book.

So in the end I clear most of chapter 1, chapter 2 and most of chapter 3 from Spacetime and Geometry. I have on my queue to read the appendices on other mathematical topics (including non-coordinated basis, which are important for spinors, and hypersurfaces and induced metrics). Before I started I had read the first part of the chapter on manifolds in Nakahara's book. I think now I will turn to the second part of that chapter on Lie groups.

Additional topics I want to read about include more Yang-Mills theory, and spinor stuff. I am thinking of reading some of Siegel's book. I just cannot concentrate with my computer on, so sadly I might have to print some of the chapters. I guess it is not that sad, since the trees have already been used; the paper is ready for printing. As long as I put it in the recycling bin it is OK. If somebody wants to save some trees, he/she has to prevent them from being cut down. I guess not using paper will send some sort of message, but it might not be a effective.

Anyway, I guess I will start my second part of the summer term tomorrow.

Chief TA

Yesterday I had my first meeting regarding my summer TAing. It was funny since the professor appointed me as what I like calling "chief TA". This means that I will not TA per-se. Instead of grading reports and the usual, I will be in charge of the TA meetings and other stuff. I its good for me, since I will not be actually teaching but in charge of overseeing other TAs. But I think that will not be as much work as what the rest of the TAs do. Oh well, I am not really complaining.

I also bought my plane ticket for flying to CA at the end of the summer. That will be awesome, as usual.   

So far so good... (I)

During the end of last week I turned towards Sean Carroll's book Spacetime and Geometry: An Introduction to General Relativity. This is not the first time I go through some of it. I started on the first chapter, going through the mathematical details and skipping the part on energy and momentum and classical field theory. I will go through this two sections once I reach the chapter on gravitation. When I finished the first chapter I carried on to the second chapter on manifolds.

The second chapter formalizes ideas familiar ideas and puts them in the context of a manifold. These ideas include vectors, tensors, differentiation and integration. I am currently finishing the third section of the third chapter on curvature. Right now I am exploring the concept of parallel transport and geodesics.

So what have I learned so far? Here is an outline with the basics idea behind the mathematical construction of a nontrivial spacetime (not flat). It also serves as a nice summary of what I got so far...

The motivation behind General Relativity is the matter and energy curve spacetime and this curvature is what we call gravitation. (I have not reach the chapter on gravitation, hopefully by the end of this week, so that line that you just read might be very wrong...). We would like to construct a spacetime that can be curved, and we would like to describe this curvature mathematically. Another motivation behind relativity is the fact that the laws of physics should remain invariant under coordinate transformations. This tells us that we should use objects that have the same form in any coordinate system. We call this objects abstract vectors, dual vectors and higher-rank tensors. We also would like to describe things locally, since relativity tells us that the speed of light is an universal upper bound to the magnitude of the velocity of any object that carries information. From special relativity we know that this means that simultaneity looses validity between different observers. For a given physical object (a tensor, a vector, etc.) different observers will have different components but this components should be related by a coordinate transformation.

Most of the construction comes from making analogies with flat spacetime (a Cartesian product of many real lines R.) The first thing that we want is that given a region of curved spacetime, common sense tells us that locally (a very small patch) will look like flat space. We can imagine then a chunk of curved spacetime that is made up of flat patches of space, all sewn together. This is along the lines of the entity known in mathematics as a manifold. We need to also demand that this patches can communicate through continuous maps. I am not going into the formal details, but the basic idea is this: One construct a generalization of a Cartesian system by connecting neighborhoods of Cartesian systems with continuous and differentiable functions. The manifold is a collection of points, and this point in turn are mapped locally into a flat spacetime.

The next step is to set up the notion of a vector. In Euclidean space (which is the formal name of a space formed by taking a finite number of Cartesian products of real lines R ) a vector is an object that obeys a set of rules that constitute a vector space. This idea works well in Euclidean space, but when one considers the notion of moving a vector along a spacetime that is curved, it is not clear whether the vector changes or not. This is necessary for adding or taking products of vectors. Since each point on a manifold is locally flat, one can define a vector space on each point, this is called the tangent space. The tangent space is formed of all the vectors that originate at the point. A natural  choice for basis vectors are the set of partial derivatives.

Other objects that are generalized to curved spacetime include tensors and dual vectors. More on that later.

A terrible idea...

Since I am so excited about this fall's courses and have been thinking (to much) about them. I want to blog about them, but I am not happy with Blogger's LaTeX support, and am kind of jealous about Wordpress. I had some blogs over there, but lack of time forced me to forget about them. It is a time consuming task... but I want to do it! So I have been thinking of starting (or restarting) one of my Wordpress blogs. I thought of moving Quantum Crops there, but I like Blogger.

So I will try to keep some notes over here. Hopefully this blog will last more than my previous attempts.

Relativity, fall 2007!

I just checked the course's website and professor Siegel has updated it for this fall's Relativity course (formally know and Modern General Relativity). This website can be found here.

I am so excited! It definitely does not look like a traditional course in the sense of not having a first part on the mathematical formalisms like manifolds and curvature, among other topics from differential geometry. That will be good, I mean if the class is driven by the physics instead of some mindlessly index manipulation. The list of topics to be cover includes lots of quantum stuff like spinors, supersymmetry and supergravity, not to mention strings at the end. That would be awesome! I am also looking forward to learning about Yang-Mills theory. And the best part is that the textbook is free!

Also Warren has a link to what looks like a course on Advanced Field Theory for the 2008 spring term. This also looks pretty sweet, I hope I can take it. It is funny how he brags about the course having material like "stuff you may have missed if you didn’t take field theory (PHY 610 & 611) from me" :-).

I will try to blog about his lectures and my frustrations with the homework problems. Or maybe I should not blog to much and use my time on something else, like studying...

Predictions for book Harry Potter #7

For this year's Valentine's Day I got as a gift Harry Potter and the Sorcerer's Stone. It took me about two months to read, mainly because I was busy with homeworks and partial examinations (not to mention the weekly grading...). I finished it around the week before Holy Week. Since I enjoyed so much, I ordered books 2 and 3. They arrived on time for me to start #2 right after I finish with #1.

It took me less than 5 days to read the second book, since I was on my spring break. For book #3 I took more time, so I finished it after maybe two weeks. But then it went downhill (or uphill?) with books #4 and #5 over a few weekends, reading them on my way to Wellesley and back to Stony Brook. Finally book #6 had to wait after finals, but the truth is I did not finished it after finals... Instead of studying for that quantum final, I learn who was the Half-blood Prince. Oh well!

These books are good. I think this is the best point in my life to read them. I mean, when you are a student. I am pretty much grown up. But Harry Potter is just awesome.

I first considered reading the HP books when John Denker at NIST talked about them. John Denker is a physicist I met while working at NIST on the summer of 2005. He is pretty cool and I had the opportunity to eat some lunch meals with him. He used to work at Bell Labs and he told us some stories from his time there, including the lunch discussions about Buffy the Vampire Slayer (the TV show) between scientist and researchers. I still had this mental picture that scientist were usually pretty boring people and that I was the cool one. I was so wrong. In fact, at that time I hadn't saw any episode of Buffy, besides the old movie. After Buffy John says he started reading the HP books. At this point I kind of looked down upon him. I guess he noticed this, since he went on to explain why Harry Potter was important with magic.

Besides all the drama about a young boy growing up in a dangerous world with friends, family and foes, the book is about a magical world. This magical aspect is not traditionally magical, but somewhat understood and studied academically, just like science in real life. In the book magic can be seeing as a metaphor for science (mostly the physical and life sciences), but of course it is really portrait as an alternative to science. As John Denker argued, to most people what scientist do is like magic. Well for once what Feynman did was magical ;-).

But anyways, I would like to have a record of what I believe is going to happen on book #7. I believe this is the worst thing to do, and also wrong for many reasons:

1. I am not the writer of the book. When you are reading a story, you should sit back and let the story take you along for a ride on the invisible hands of the author. Stories are great ways of learning how other people see the world.
2. I am not thinking hard enough so my predictions are going to be obviously wrong.

Anyways, here are some possible scenarios that could happen or maybe I want them to happen.

• The nice and happy ending. Harry beats the Dark Lord and everyone is happy. In the future he marries Ginny and then is offer unanimously the position of Minister of Magic but turns it down to become the defense against the Dark Arts professor at Hogwarts where he then later becomes Headmaster. Hermione and Ron also get together and maybe Neville and Luna. Snape and Hagrid die.
• The more realistic ending. Harry and the Dark Lord both die during the last battle. This would prevent writing another book in the future and would give the series a definite ending. Harry will realize that dying for the sake of others is sort of a good thing, so I can see his sacrifice being completely justified.
  
• The nice and sad ending. Harry lives, but Hermione and/or Ron die. This does not make much sense, since then Harry will be alive but with no friends. At this year's Nathan's Hot Dog Eating Contest at Conney Island, NYC one of the contestants was holding a sign that read "Hermione Dies" on one of its side. Maybe it was just a prank or joke, or maybe...

I really do not know about Snape. I have a gut feeling (and I just had dinner...) that Snape is going to turn out to be good, in a not-so-usual way. Who knows, maybe he will be the one who finishes off the Dark Lord. Lupin and Moody are also two possible characters that could die (along with other professors from Hogwarts), but they are not main characters.

I just want July 20th, midnight, to come now. I will read some at that moment, then the next morning after breakfast and hopefully finish it by Monday morning.

Thank you J. K. Rowling for such a great story.

On a Manifold you can...

Well I am happy to say that there has been some learning going on at my desk. During the past few days I have been going through the sections three sections of the second chapter of Nakahara's book. That would be basics of maps, vector spaces, equivalence relations and topological spaces.

In theory I should know must of it since I took classes on Topology, Linear and Abstract Algebra, and Set Theory. The truth is that I have forgotten must of it, which is a shame. But reading it has been easy. At least I have been able to work out the exercises. Then I turned my attention to chapter five on manifolds. I choose to "ignore" the chapters on homology and homotopy groups. I technically read the first part on homology groups (on simplexes and simplicial complexes) but that was on an airplane heading to Puerto Rico and later back to NYC.

The first task is to define what a manifold actually is. Once this is done you go on and define what a vector is on a manifold. With vectors one can define the dual space of linear functions and then you can construct higher tensors.

I got kinda stuck while discussing differential forms. It was kind of sad, since I know that this exercises is easy. Basically one has to prove that given an r-form and a q-form the exterior product between them will be the same as that with reverse order multiply by a minus one to the power of the products of r and p. And also one has to show that for r an odd number, the exterior product of an r-form with it self vanishes. Both of this identities follow from the definitions of a differential form and the exterior product, it just include a counting part. Sadly I suck at counting things.

That was my least favorite part in statistical mechanics: counting micro-states or configurations. It is very sad that I have been always so stubborn and skeptic about counting and number theory in general. I am adding it to the list of things I should learn right before I die.

Pattern on my tea

I got this pattern once on my tea. Ever since I took the statistical mechanics course I pay more attention to all the fluids in my life. The cup of tea is particularly interesting.

I used to drink coffee. Most of the grown-ups around me were drinking coffee when I was young, so I tagged alone. I was drinking two cups during the morning. As long as I took those two cups I was a happy person. One time I did not had any coffee. It was horrible, my head wanted to implode.

Last winter I visited my girlfriend at Wellesley College. She did not had a coffee maker, so I just started drinking tea. I guess the transition was smooth, since I do not remember having that much of an ache. Tea is suppose to be healthy too.

I like making my tea on a clear, see-through cup. That way I can follow the trail of particles diffusing on the water. The growing arms of the spirals is awesome. I cannot help but think of the particles approaching each other and then separating when I use my spoon. The sugar dissolves, sometimes yes and sometimes no.

But the fun lies at the surface of the cup. Here there is an ongoing exchange of particles with the air. If you blow on it you can see the lines of particles separating from the surface. The streams of vapor pulling more and more molecules into liberation.

OK. I am done with the poetry. Just wanted to appreciate a bit the beauty of a cup of tea.

Cold feet?

I believe I am getting cold feet about my summer readings. I really need the dicipline to read on my own. I have been reading snippets of many texts. I have the tools for this. If I really put the effort, I know I can get a lot from this.

But really. I do not have the dicipline to sit down in front of a book and read and read and then solve some problems to see if I actually learned something. I should have the dicipline, or whatever it is that you need, to learn by myself. If I could talk to somebody else. But most of the people I know are more advanced than me.

So I am going to see if this works: I am going to check my email in the morning, then turn off my computer and concentrate my attention on reading the first 5 chapters on Nakahara

Amherst

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Been off...

I have been off the books all this time with the visit from Meri and Ann. Even today that I was by myself. I woke up around 10:12 AM and took a shower, made some oatmeal and checked my feeds on Google's Reader. Then I headed to my office where I bought the bus tickets for the trip to Amherst online and then went to the post office to get boxes to ship some stuff for Meri's parents in California. When I got back to my office I decided to recycle all the used paper in the lab notebooks of my past class. I got a nice set of empty sheets of paper that I can use for calculations.

Most of the blogging online now is about Strings 2007, the annual conference about new developments in the field of string theory and related topics. I just want to say something about this: I was keeping an eye on the Strings 07 poster at the department's board and I guess someone took it. I wanted that poster! Oh well... The main buzz is about Ed Witten's latest paper on 2 + 1 gravity. Clifford writes that he not attending the conference might be a sign of some exciting new development being announce this year. Let us cross our fingers.

I should stop blogging about something I do not even understand and try to read something that could at least put me on the track to some day reach this understanding. With the trip to Amherst this week, and with friends visiting next weekend all seems a bit hopeless. I am going to try to finish the chapter on manifolds and see if I can cover the one on Riemannian geometry.

Some NYC exploring, finally

Finally I can say I have explore (a bit of) NYC. My loving girlfriend and her sister came on last Thursday and stayed with me at Stony Brook.

On Friday we took the LIRR train to Penn Station. We started by heading out of Penn Station looking for the Empire State Building. After mistakenly pointing to the wrong antenna, we "came across" the tallest building in the city. It was pretty impressive. I had been here before, probably like ten years ago, so I had forgotten how tall it looks. Then we headed toward Grand Central and the Chrysler Building. We walked by the New York Public Library, which looked pretty nice so I might return there by myself to read some mathematics or physics. On fifth avenue we looked for a bagel place, but instead settled down for a cafe that was close to the Museum of Modern Art, which was our main target. At the cafe I had a croissant sandwich with imported ham and Swiss cheese with some pesto pasta salad on the side. It was better than I expected.

The MoMa was pretty nice. The first thing that we saw was a very tall wall full of cartoon-ish drawings with a political attitude. We wandered around the different floors. The most boring was the floor on Design and Architecture. It was annoying that The Persistence of Memory by Dalí was out on tour. It will not be back until mid 2008. The Picasso paintings were nice at least. I really like Picasso since he explore the concept of viewing something from all points of view at the same time. I think that in his book Hyperspace, Michio Kaku discusses that just like a three-dimensional being can observe all of "space" on a two-dimensional piece of paper, a hyper-being living on a four-dimensional world would be able to see all perspective of a three-dimensional world.

Anyways, after the MoMa we walked to the toy store F.A.O. Schwartz and then through Central Park. The park was pretty nice, we walked through the south-east corner towards the mid-west part, catching the train on 72nd street to finally returned to Penn Station and catch the train back to Stony Brook.

On Saturday we started by heading to 79th street to get some bagels at the nearby H&H. The service was a bit rude, since I had to repeat the lady the list of bagels I wanted many times and to top it all they did not accepted debit cards. Nevertheless, the bagels were good. H&H is not a sit-down place, so we headed outside with no napkins or even a knife for our bagels. I had an everything bagel, same as my girlfriend's sister Ann. Merideth had a plain bagel. For home I bought two poppy seed (which are becoming my favorite bagel now...), two everything, two plain and one pumpernickel. After bagels we headed to a Starbucks for drinks. After all that w hoped on the 3 line of the subway downtown to South Ferry. We realized that we needed to be on the 1 line so we got off at Time Square and took the 1 that came behind us. It turned out that because of constructions the 1 is not going down to the South Ferry so we had to change at 4th street for a 2/3 train down to Chamber street and there we took a bus to the ferry. It was all annoying because of the sense of slow moving. By the time we got to the ferry for the Statute of Liberty all the boats for that day were sold and they were selling tickets for the next day trips. That was also depressing, but my company reacted well and instead we wandered around Battery Park and watch the street performers The Positive Brothers. They were pretty good, besides some technical problems with their audio and some out-of-the-hand jokes like expressing the desire for making an Oreo with one person from the crowd. Still they got one dollar from my wallet.

After this we had a fruit break where I had an orange, and literally came across the insides of a very nice looking building when I suggested to visit the bathrooms of the National Museum of the American Indian which was previously the U.S. Customs House. This museum is not part of the Smithsonian system, and it looked a lot like the ones in D.C. The small bit we saw was very empty, but the security guards at the entrance were really nice. We checked out Wall street, where we saw the New York Stock Exchange and the building where George Washington took the oath as the first president of the U.S. I wanted to find this place since it appears during the end sequence of Metal Gear Solid 2: Sons of Liberty. After Wall street we took the subway to Spring street, where we had a few slices of pizza from nearby Lombardi's. This place claims to be the first pizzeria in the U.S. It was truly great pizza, we had the traditional Margherita. Very yummy and tasty!

We headed to the Empire State Building after the pizza. The line was OK, but it was annoying all the stuff they are trying to sell you while you wait for the elevator. They even take a picture of you. The view from the top was spectacular, of course. This is the highest point in the city, since September 11th, 2001. After the view we sat down in front of the public library and then headed across Time Square to for the train to Penn Station.

It was all fun. I might go by myself at some point. Maybe next week since I have booked a trip to Amherst, MA on this Wednesday returning on Saturday to visit my friend Michael. Should be fun. Meri and her sister left on Sunday afternoon to London where they will start a trip along Europe for a three weeks. My girlfriend called around noon to tell me she made it fine to the hostel and that it was a bit cold. I told her that envy-green was my favorite color.

So far into the summer

Yesterday I just got back from two weeks worth of vacation visiting my family and friends in Puerto Rico. After procrastinating during the first week, I am happy to say that during the second week I was able to go out and do stuff. I went to Playa El Combate, a beach in Cabo Rojo, close to my hometown Lajas. The water was so nice. I wanted to just float all day. After this past winter I was really looking forward to the Puertorrican beaches. With my siblings I went to see Pirates 3 and with a friend I saw Rise of the Silver Surfer. I guess it is the summer of sequels. I did not had high expectations regarding any of these two movies, but I am please with both in the sense that they entertained me. [With a small exception in FF2 when Mr. Fantastic mentions the Tachyon Pulse... but that was not that bad...] I also attended the wedding of one of my friends, José Emilio, who married his long time girlfriend Miriel.

I found that some relatives where having more health-related issues. My cousin had a baby boy on last October and since then baby Edwin has grown a lot. Combined with the wedding, all this made me feel really old. I mean, serious stuff is going on around me now, deaths, births, and even weddings of friends. I must confess that watching my friend and his (now) wife in their wedding attires made me feel weird. To me their still two young persons who just finished high school. Well, the truth is that I finished high school 5 years ago. A lot of things have happen since then.

Before leaving to Puerto Rico I spent one week with my girlfriend in Wellesley. She finished her undergraduate education in physics this past spring at Wellesley College. I am really proud of her :-) she got a physics prize and was offer membership to two honor societies. I always said she is the smart one in the family. Which family? This is another sign of my age, I am thinking of marrying her and leaving together! There are some details that have to be figured out before, but we are working on that.

I stopped reading Srednicki's book on QFT and started Ryder's version. On my way to Puerto Rico I started reading Nakahara's book on geometry and topology. I tried reading it before, but now it makes more sense. So far I skimmed through the first two chapters and read a bit on chapter 3 on homology groups and also read a bit on chapter 5 on manifolds.

While at PR I also finished reading the biography/memoir of John Archibald Wheller. It was a nice read; a combination of personal stories about meetings with great physicist such as Bohr and Einstein, and how Wheller developed important concepts such as geons and black holes. The first thing I did when I came back was to download the article on geons from the APS website, using the university's account.

Speaking of the university, Stony Brook is like a ghost place this days. Today I walked to the mail room to pick up some packages. I had to walked through one of the quads. Maybe there is really nobody there, since it looks like they are refurnishing the rooms. But really, it is kind of eerie walking through the plaza. It reminded me of last summer when I visited the student union looking for the ATM and found the building completely desolated. Summer classes have already started, so I guess there are not that much people around. Or maybe they are staying elsewhere. Or maybe I just do not go out to often. I suspect the latter to be more correct than the former...

LaTeX on Blogger?

Testing Blogger's LaTeX capabilities...

Not bad...

Tis a bit sad

I think it is best for me to stop trying to blog on that one Wordpress blog. I should not spent so much time blogging, and besides what I wanted to do might had been a good idea but I need more time now to expand it properly...