ELI5: Explain Like I'm 5

Hard problem of consciousness

The hard problem of consciousness is all about understanding how our thoughts and feelings work. It's a very complicated problem, and nobody has all the answers yet. But here's the basic idea: when you think about something, like a puppy playing in the park, you can picture it in your head and you can also feel happy about it. That combination of pictures and feelings is what we call consciousness. It's what makes us human because no other animals can experience that in the same way we do. The hard problem of consciousness is trying to figure out how all of this works and why it happens. Scientists have been trying to solve it for a long time and there's still more to learn.