What do you guys think of Scott Adams' theory that the Universe might be made of recursions, created by observation?
I find it fascinating but have no strong opinion yet if it makes sense.
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Although that particular blog is mostly philosophy, there are some ideas which are scientifically relevant in there. However he, as many other people who are not very deeply interested in physics, is making a mistake of trying to make analogies to classical world while examining the microcosmos, like questioning what an elementary particle is made of. It, of course, sounds absurd when considered from a macro point of view, however the particles in question have such sophisticated behavior that they are almost virtual.
To inspect what a certain particle like electron is made of can be a bit out of reach for humanity at the moment, and possibly in the near future. As far as our observations go, electron is not made out of anything but itself, but string theory proposes that it is actually made of tiny strings of energy, vibrating at certain frequencies and properties to create different forms of particles.
To give a very confusing example, what exactly is an electron made of? Well, an electron orbiting an atom is made of probability waves. Yep, not electromagnetic, not sound, not seismic, but these are very real probability waves.
Coming to your main question, I think this is much more a philosophy than science as it has no scientific basis and no provability in the foreseeable future. Most importantly, it does not address to any phenomena we see around us. Accepting the existence of such a theory would be a bit hypocritical as we do not question either existence or non-existence of God in science since "God" is not a necessary fact to question while observing the universe.