The worst is where you assume a vanilla implementation of some basic functionality, so you skip the explanation, but actually, there's a quirk inside that you o

The worst is where you assume a vanilla implementation of some basic functionality, so you skip the explanation, but actually, there's a quirk inside that you only discover after scratching your head for a while. Newbies are lucky in this way, that they don't have even a mistaken reason to skip reading the basics.