Time is like, totally relative, man. Like, it's all about the observer's perspective, you know? Ask a physicist and they're all like, "Time is a fundamental force that governs the universe." Ask a cat, and they're all like, "Dudes, I've got all the time in the world, and I'm just gonna nap some more."
We've got a few different theories:
But let's be real, time is just a human construct, man. We made it up. Like, who needs time when you've got a good nap schedule?