[grawprog]

I've learned this through experience. Every time I use snippets of code from somewhere I inevitably have to change it a bit. With code I take the time to write out by hand this is never usually a problem. I've usually got a good idea how the piece of code works and can sometimes even change it as I'm copying it out. But with code I copy and paste, I always end up struggling to figure out how it works while i'm trying to make it work with my code.

I've come to learn that taking the initial extra time to write it out by hand is definitely better than having to spend more time trying to figure it out and fix it later.