Transcript:

So, you remember the Schrodinger's cat conundrum, right? Either the cat is alive or dead, or all that stuff. So the source of this mess in quantum physics, or apparent mess, is the beginning assumption. And Richard Feynman explains it really well in one of the videos that's on YouTube: “Quantum Mechanical View of Reality.” Watch that. And it's a long-winded video, but I'll summarize it for you. 

So, the problem happens in the first assumption. So what is the Schrodinger's cat experiment? You put a cat in a box, and inside the box is a poison which either releases the poison or doesn't release. We don't know. So, you close the box. Now, you start with two possibilities: the cat is either alive or dead. Cat itself is the problem. Once you close the box, you cannot see the cat. There might not be anything behind the closed box; there might not be a box anymore. This is the fundamental premise of quantum mechanics: only what you measure is what you can analyze. If you cannot measure it, you cannot say anything about it.