I find it frustrating that languages features work actively against you when you're trying to understand something. Wide inheritance and macro usage are probab

I find it frustrating that languages features work actively against you when you're trying to understand something. Wide inheritance and macro usage are probably the worst. Good naming can aid understanding, but basic things like searchability are harmed by this. Of those two, macros are the most trouble. You can't take anything for granted, and must look at every expression with an eye for detail. Taking notes becomes essential.