You might just think of analogies as being clever constructions, put together by smart people, to help you understand complex problems — but there's more to them than you might think.
In fact, they're a crucial part of being human; the way in which our (relatively!) simple bodies manage to understand the incredibly complex world around us; a crucial tool which actually shapes the way we think. This video goes some way to explaining why that's the case. Enjoy! [New Scientist]