It is a thing that you can't explain, but it's definitely a thing. Like, have you ever tried to understand how a toaster works? No, no, don't worry about the science-y stuff, just... what is it?
Or, you know, have you ever tried to understand why your aunt loves knitting? No? Just trust me on this one.
But seriously, cognitive scientists, philosophers, and philosophers-in-training, this page is for you. It is a thing because, well, it's a thing. But let's try to be more specific. It's a thing that's hard to define, like the sound of a dripping faucet or the smell of freshly cut grass. What is it?