July 27, 2015
The other day I went for a long walk. The city where I live has a large series of bike trails, running all over town, and I decided to walk along them, for miles and miles. As the hot July sun beamed down on me, I found myself sweating profusely, I was very hot, and was borderline miserable. I was the only one crazy enough to be out in that heat. The temperature was roughly 101 F. Even so, I pressed on for several hours, carrying a large water bottle with me.
Being the kind of guy I am, I spent my time thinking about existential philosophy. I was thinking about the universe and how it was established without any input or considerations from me. It’s given to me as this powerful force unto which I must submit, without choice. Before I was even born, there was this ‘order’ which was established and powerful forces push on me, telling me to submit to it.
Think about the different countries established all over the Earth. The corporations. The economy. The laws. The culture. The schools. The cities. It was all there long before I was born. I had no say in any of it, but I’m thrust into it and am told to conform to it all, to obey, and to take a part in it.
I was with a friend the other night and she asked me to explain my overall view of life to her. I told her to imagine a large rock ball with a thin layer of plastic on the outside. Next she was to hold a heat gun (imagine a sort of high powered blow dryer) to aim it at this plastic covered rock ball. The heat from this gun starts to melt the thin outer plastic, and bubbles start to form, coming and going, bubbling in and out of existence. Assume that this plastic fairly uniformly covers the surface of the smooth rock sphere.
Then I told her to further imagine that those bubbles were each conscious and minimally self-aware. They each awaken, find themselves on this rock ball and say, “Why am I here? Why do I suffer like I do? Did I do something wrong? Why are my friends and loved ones dying? Why is everything always changing? Was there a creator? Why does everything I love fade away with time?” Then their bubbles melt away, new bubbles form, and the process repeats, over and over, as long as the heat-gun is turned on.
All you have to do is replace the heated blow dryer with the sun and instead of plastic on a rock ball, imagine a thin layer of dirt and water on Earth’s surface, and it’s the exact same picture for us. The same dirt and water is being reused over and over, reforming life-forms of all kinds, all confused about their existence, minimally self-aware, who are all fighting for their survival and to bring their desires into existence. Because of the way things are structured, the universe becomes self-aware, learns things, then quickly forgets most of what it learns as each new generation is born. Some information remains in the bodies of surviving life-forms in their DNA, but their minds (stored in brains) are wiped out and always being rebuilt. This process may slowly be overcome in humans as writing and culture can transcend generations, and our technology may soon allow us to pass memories and knowledge to one another instantly through computers and brain uploading, but that’s another topic. Throughout the billions of years of Earth’s and life’s existence though, this has been the story. We’re pathetic, stupid, frail creatures who live a very short time and then die, and our bodies are recycled and become other forms of life, over and over and over.
Existentialist philosophers call this human condition absurd. There is no meaning to it besides what meaning we give it. There is little to no justice to it. Bad things happen to good people and good things happen to bad people. There’s an amoral stupidity running the universe. A tragic event could destroy anyone, at any time, leading them to a direct confrontation with complete absurdity. When looking at this situation, there is a disorientation and confusion within these “bubbles”, having to deal with a meaningless and absurd world. How do you keep hope alive? How do you avoid falling into complete despair?
That was quite a large introduction, but the main purpose of this post is to discuss how people attempt to deal with this meaningless universe and the difficult human condition.
– Give Up
There are a lot of people who, when confronted with this freedom and realization of their condition, simply end up saying, “Nothing worthwhile ever happens; nothing merits desire or effort.” They basically try to escape the world, deal with it as little as possible, ignore it, and just hope it goes away.
– Subordinate Themselves To Some Value System
Struck with a terror that they have to create their own life through their own decisions, with limited information, they say, “How can I know what to do? I’m not qualified.” So they defer their responsibility of thinking and making decisions for themselves to some third party. For example, they may become extremely religious. They’ll say, “The Bible is true! Everything it says is good and comes from God, who is perfect and knows better than me. If you just do what it says to do, life will be as good as it possibly could be for you.” It’s a form of fear of reality and making decisions. Much of my family lives this way.
– Passion For Some External Thing
By consuming themselves in some thing, they hope to escape the human condition. These people don’t believe meaning lies in the object itself, but in their relation to it. Hollywood movies seem to always advocate this as the solution to life. Passion for a lover, for a career, for composing music, whatever it may be, that will save you from this life. Just find “your” particular something in this world and immerse yourself in that. It’s a sort of glorified form of distraction.
– Become a nihilist
Most nihilists are teenagers who have lost the idyllic state of childhood but it also frequently happens in those suffering a mid-life crisis. They tried exercising their freedom and the world beat them down. This often leaves them in a state where they feel a need to prove to others that the world is meaningless, and in the worst cases, destroy good things others have created just to prove the world truly is meaningless.
– Search for Adventure
These people throw themselves into their undertakings with vigor and enthusiasm, but don’t attach themselves to the end to which they aim. Adventurers will openly tell you there’s no meaning to life, so they engage in a hedonistic relationship to the world, getting involved in a vast number of enterprises without loyalty to any of them. These people like action for its own sake. They live “in the moment”. They often hold a secret desire for their exploits to be told in the history books. In the end, it’s a form of not making a decision on what they want their life to be.
– Become An Abstract Mind
This is the one I often fall victim to. These people sort of sit in the middle, indecisive, claiming they’re in an objective pursuit of truth. They’re devoted to the mind as an objective, universal space where they can escape and avoid the subjectivities and frailties of the human body. They are always skeptical and cautious. By claiming objectivity, these people aren’t forced to form an allegiance to any particular idea or doctrine. They can’t submit themselves to subjective valuations. That’s somehow beneath them. In reality, it’s a denial of their humanity and a fear to give their own subjective evaluations to ideas, doctrines, and lifestyles. That’s part of your duty as a human, to give value judgments to this world. Otherwise it has no meaning.
I don’t like being human and things like logic allow me to imagine and see possibilities which are infinitely superior. That makes me susceptible to this human failing. I don’t place much value in day to day living and our daily toils. Sadly, I try to be grateful and accept imperfection, but honestly, I can’t make myself like something I don’t like. The human body is frail, ages quickly, and requires way too much maintenance to continue existing. I’m surrounded by stupidity and things which are badly built and designed. I don’t generally care for the body’s instincts embedded in our nature either, which lead people to stupidity, violence, and greed. I don’t want to get too distracted with this topic at the moment, so let’s move on.
– Create Art
I’m a bit timid to talk about artists since I don’t understand them well. I can say that many of them try to take the materials around them and transform them into something meaningful. If they believe in anything, it’s often something like beauty or order.
– Give Their Life To Others
There are some people who justify their lives through other people. They focus on making other people happy, and that in turn makes them happy. They’re very concerned with empowering others and helping them exercise their freedom, expressing themselves. They’re altruists.
I remember meeting a woman who was miserable with her life and wanted to escape, so she volunteered to go to India to help feed the poor. I thought it was a bad idea, but she got angry and stopped talking with me. I told her that you should give out of abundance not lack.
Serving others and hoping it makes you happy is an interesting concept to me. Not too long ago I was watching a show on Youtube called World’s Strictest Parents. In the show, troubled teens are sent to a home with new, very strict parents. It was interesting that many of these parents would send the troubled teens to volunteer in homeless shelters and other places like that to make them realize how good they have it. You know, cure them of being spoiled brats. Depending on the teens backgrounds, some got a lot out of it and it helped them a lot, while others were only made more depressed. I would be the type who would only become more depressed being asked to do that sort of thing.
There was one teen who came from a wealthy background. He saw all the homeless and downcast and almost burst into tears. He looked at them all and said, “I can’t look at this any longer. It’s too depressing.” Then he left and sat in the car. I related to him. The idea running through his head was, “How can reality be this horrible? Why does this even exist? Why are things so bad? Why do I even want to be a part of it? I don’t even like it when I’ve had it good. Who would want to experience the world at this level?” It wasn’t a refusal to help, but an emotional paralysis that would grip him if he tried to help.
In the end, I walked for hours, eventually found myself suffering from heat fatigue, and just went home and relaxed. This list isn’t meant to be exhaustive. I don’t know why I’m living here on Earth as a human being. I don’t particularly like this place, but I feel like I was thrust here and wonder if I am supposed to do something. But what? And why should I care? It’s sort of like finding yourself on a short dilapidated bus ride, without air conditioning or heating and uncomfortable seating. You know you won’t be there long, yet there’s these strange people on the bus decorating, singing songs, and trying to pretend it’s home. Honestly, I’m more concerned with where this bus is going, the road it’s on, and the general lay of the land all around us. That’s why I’m most interested in physics and cosmology. Human existence isn’t that interesting. One of my favorite aspects of physics is it doesn’t have anything to do with humans. When it does (say nuclear bombs), I tend to find myself depressed again.
July 5, 2015
I promised you all a demonstration of my cousin and I’s firework weapon “The Awesome Possum”. We were kind of crazy kids, chasing each other around open fields with these things. As you can see though, they’re so inaccurate it’s rare for anyone to even get hit, and even when you are hit, bottle rockets aren’t anything to worry about if you’re wearing proper eye protection. This video features a bigger “possum” weapon, though I will later demonstrate a smaller launcher which is easier to load and fire.
Happy 4th of July.
July 2, 2015
Do any of you have childhood memories of things which were absolutely amazing at the time, but then you went and relived those moments as an adult, only to find they weren’t all that great in retrospect? I’ve had that happen many times. As a kid, I absolutely loved it when Mom would make hamburger helper. I begged my Mom to make me some again, and well, it’s not horrible but it’s nothing to write home about either. I also remember a time when my parents took me to this water park with a big water slide. I decided to revisit and as I made my down the blue pipe, it just wasn’t the same.
I wonder what changes in the adult brain? I’d love to feel that excited about anything again. When I was a kid, all you had to do was dangle a piece of watermelon Airheads taffy in front of me and I’d be ecstatic, grinning ear to ear. Now I have enough money to walk into the store and buy entire cart-fulls of candy, but all I’d end up doing is nibbling on a bit of it and say, “Meh.” Actually, I shouldn’t say that. I absolutely love chocolate. Milk chocolate. Dark chocolate. Doesn’t matter. I love chocolate. I actually like that more than I did as a child, and that’s saying something. I’d likely end up gorging until I got too sick to eat anymore. Anyway, where was I? Oh yes.
With the fourth of July around the corner, I found myself remembering all of the firework wars I used to get into with my brothers and cousins. They were so much fun. My father used to own and run a fireworks stand, so growing up I always had crates and crates of left-over fireworks to shoot off – a practically limitless supply. We would build sophisticated bottle rocket launchers, dress up in camouflage outfits, and fight one another like army soldiers down in the creek. It felt far more real than firing at each other with sticks or toy guns.
As the memories flashed, I remembered an old weapon I’d created as a teenager. We all dubbed it “the awesome possum”. It was the pride of our group, the culmination of years of research and hands-on experience. Consisting of a thick PVC pipe sealed off at one end, along with a big hole drilled in the side, you’d cram it full of bottle rockets then jam a sparkler into the hole, simultaneously lighting all the bottle rockets at once. Within about ten seconds, a barrage of hundreds of rockets would come screaming out of the pipe, exploding in every direction. It was the ultimate firework weapon.
We dubbed it “the possum” because just when you thought it was dead, unfired rockets would spontaneously light themselves, leading to a second wind. Armed with “the possum”, enemy combatants were scared to rush you.
I called up my buddy Greg and said, “It’s time to resurrect the possum.” Enthralled with the idea, he decided to join me and we went to Lowe’s and bought fresh PVC pipe, mesh shielding, and duct tape. I was ready to relive my childhood glory days.
We epically filmed every step of the assembly process and were planning to edit it all into an construction montage with the Rambo 2 preparations theme in the background.
First we scavenged the garage for tools. We grabbed a drill, wire snips for the mesh, and then a box of drill bits. On we went, drilling the hole in the pipe, next attaching a huge handle, and attaching the wire mesh to the back for air ventilation. Finally we added epic black stripe decorations using electrical tape.
It was magnificent. An epic masterpiece. This was far bigger and better than anything I had access to as a child. All that was left was the fireworks themselves. We went by a firework tent in town and bought whistler rockets and morning glory sparklers. I could barely contain myself. When we arrived back at his place, I tore into a box of whistler rockets, crammed seven or eight dozen rockets inside, and got out a morning glory sparkler. This was it.
I told Greg to get the camera rolling. Wearing a full Rambo’esque commando outfit, I was going to strike a pose like Slash in the Guns and Roses November Rain guitar solo scene. With the possum arc’d into the sky, I planned to close my eyes in triumph as a screaming barrage of rockets flew into the golden sunset, accompanied by hundreds of rocket explosions, one after another.
I pulled out the lighter and lit the first sparkler. Sparks and flames started spitting and sputtering from the little green and blue stick. Yeah baby, this was it! I crammed it into the hole and the rockets began to ignite and a few blazed into the sky! With my eyes closed, I stood there, waiting and waiting, but nothing else was happening. Something was wrong, very wrong.
First off, the sparkler had went out on me. What the heck was this? Was it not getting enough oxygen? And the whistler rockets were total wussy wimps. They could barely fly six feet out of the cannon before petering out with a mild plop on the ground. They couldn’t even hold themselves up in the sky. Their explosions were puny thuds in the nearby grass.
I waved to Greg “Cut, cut!” A total disgrace. What happened to my moment of glory? There’s no way I’d ever let anyone see that footage. It was simply embarrassing. I’m a prideful man.
Frustrated but still hopeful, I relit the sparkler. Ok, take two. I arc’d my back again and struck my pose. Here it was! I channeled my inner Slash and let November Rain play in my head as the camera rolled. As the guitar solo went forth in my mind, I slowly lowered the sparkler toward the hole, but the unthinkable happened; the sparkler went out before I could even get it in the hole. Oh my gosh, you’ve GOT to be kidding me! This can’t be happening!
I threw the stupid sparkler on the ground and angrily screamed out, “Get me another sparkler.” I was practically a spoiled diva. We got another sparkler and set up for another take. I lit it, got into my pose, and all that, yada yada. And guess what? The piece of garbage sparkler petered out within a few seconds, just like the last one. I mean c’mon, seriously, all I’m asking for is a child’s sparkler. Can’t I have that much? I’m trying to celebrate the birth of America, and here I am dealing with p.o.s. fireworks.
It turns out all the fireworks I’d purchased had been exposed to too much moisture. Hooray for small town firework tents. Either that, or fireworks these days have been made politically correct — watered down, dog and pet friendly, and completely sissified. I mean seriously. Then I heard Greg say the unthinkable, “Maybe your childhood memories are a bit … exaggerated.” I was filled with inner rage. “Nonsense! The possum was the most epic thing I’ve ever built. It won’t end like this. You’ll see! YOU ALL WILL SEE!”
It was getting late and all the firework tents and stands were closed, so we had to call it a night, but I assure all of you, this isn’t the end. The possum will rise again, rockets blazing into the sky like a fiery phoenix. You all mark my words! And when I complete my mission — and I will — I’m going to upload it here on this site for all you to see!
June 20, 2015
While studying general relativity today, I came across this wonderful quote from Albert Einstein.
“I sometimes ask myself how it came about that I was the one to develop the theory of relativity. The reason, I think, is that a normal adult never stops to think about problems of space and time. These are things which he [or she] has thought about as a child. But my intellectual development was retarded, as a result of which I began to wonder about space and time only when I had already grown up.”
– Albert Einstein
June 16, 2015
For most of this summer, I’ve been studying general relativity. I have a pile of physics textbooks here on my desk and I’ve been reading and working through them. When I research something, I tend to go online and find book reviews and order the textbooks which get the highest reviews. Strangely, that process didn’t work so well for me with general relativity.
If you read the reviews, they’ll all tell you go with Bernard Schutz’s A First Course in General Relativity. So I did, and I worked through a bunch of it, but I really don’t care for it. I did not find it very clear. I ended up reading several other textbooks, but the one which really worked for me is this one.
It’s extremely clear and easy to understand. It’s filled with all kinds of helpful pictures, has lots of worked examples, and concepts are explained very clearly. I can’t recommend it more.
I found this textbook by chance when I was looking for solutions to another textbook I had already purchased. There are university course websites where professors use a particular textbook and have assigned homework problems to their students and then post their solutions. That’s really helpful to a person who self-studies like me. A professor had posted solutions to about half of the problems in this book and I was really excited about that. Plus the course had all kinds of special notes the professor wrote up, explaining things even more. That’s just perfect for me. Past exams with solutions. Past homework with solutions. I can work through an entire course on my own that way.
Another great book to learn the main concepts and ideas from is Exploring Black Holes: Introduction to General Relativity, by Edwin Taylor and John Wheeler. This book avoids tensors entirely, explaining all the concepts using basic high school level calculus. You’d think that would limit the authors to explanations that are too basic to be worthwhile, but you’d be wrong. I’ve learned a great deal from it.
Using words and thought experiments, Wheeler manages to explain the central ideas without resorting to all this complicated tensor mathematics. It’s fantastic. It’s helped me have a much deeper intuitive understanding of what goes on within black holes, curved space-time, and all that sort of thing.
As for all the general relativity textbooks, most all of them offer brief introductions to tensor mathematics, but it’s not thorough. They all begin with a short crash course on contravariant and covariant vectors, tensors, manifolds, metrics, and all that. But if you want to learn the mathematics of tensor calculus really well and “get” it, I’d highly recommend Pavel Grinfeld’s textbook Introduction To Tensor Analysis and the Calculus of Moving Surfaces.
I would rate this textbook a 10 out of 10, and I think most mathematics books are god awful. It’s incredibly clear. With most math books, I find myself reading and re-reading, and re-reading the definitions and concepts, and slog through the “proofs” which never make any sense. This book isn’t like that at all. I just sat down and read it and it all made sense to me from the get-go. And then I went to work the problems and since everything was explained so well, I pretty much immediately knew how to work the problems. If you search online you can find a complete solutions manual.
For fun I’ve been reading the Feynman Lectures on Computation. This is a collection of lectures Richard Feynman gave toward the end of his life on computers and digital electronics. It covers things like what’s computable and what isn’t, Turing machines, Shannon’s Theorem, reversible computation, the thermodynamics of computation, quantum limits of computation, and the internal structure of digital devices and their limitations. Very cool book.
I’ve also been doing a lot of running — roughly 8 miles each day. I may well be in the best shape of my life!