Dr. Kaku didn’t say infinity doesn’t exist. He said that solving Einstein’s equations of general relativity for black holes results in an answer of multiple infinities, and that makes no sense. Quantum physics breaks down when trying to use it on gravity. There is no quantum theory of gravity. Classical mechanics breaks down at the atomic and subatomic level.

What he meant when he said classical and quantum physics will become obsolete is that physicists are close to developing a theory that incorporates quantum mechanics, classical mechanics and gravity. Right now we have two theories which explain what they explain extremely well, but they have limits at which one theory can’t explain what the other one can. That means we humans haven’t figured it all out yet. Nature and the universe are smarter than we are.

There has to be a theory which incorporates all three, and the bridge between classical and quantum physics will be found. When it is, some things about both theories will have to be updated. They may have to change completely in the sense that there will be one theory that explains everything, making the other two obsolete. Einstein’s theories actually proved Newton’s laws were correct, but not exactly as precise as reality. I predict the same sort of things will happen with whatever bridges classical with quantum theories, forming one complete theory.

Sherri

Also said by my friend was that all physics, both classic and quantum, are soon to become obsolete.

That “infinity” does not exist, I can more or less understand.

But the rest?

Have I wasted my entire life learning about things that do not exist?

Have you an explanation or any information at all on this?

Thank you.

The double slit experiment doesn’t mean everything and anything is possible. The quantum universe has rules. We just don’t have a good grasp of all of them yet. For example, we don’t have a quantum theory for gravity. Einstein’s general theory of relativity is still the ruling theory of gravity, which is very well approximated by Newton’s classical mechanics laws of gravity.

The double slit experiment shows that particles have both wave and quantum behavior at the same time. The particle going through both slits at the same time demonstrates the concept of quantum superposition caused by this dual, simultaneous nature. Things on the quantum level have probabilities over a bunch of possible locations. They are actually in all those places at the same time until you directly observe them. Then they collapse on a single position. Exactly why this happens is not all that clear, especially to those of us who don’t have a Ph.D. in quantum physics.

I recommend the book “A Briefer History of Time” by Steven Hawking, from 2005, I think. It’s been updated, boiled down some more and more technical stuff has been removed from the original book from 1988. We’ve learned a lot about quantum physics since 1988. It introduces string theory, but doesn’t go into grand unified field theory of the superstring. It should be available at your local public library.

I also highly recommend watching Dr. Michio Kaku on The Science Channel. He explains quantum mechanics in everyday language with fantastic examples.

Thanks for the question,
Sherri