Ideally frameworks will be simple enough that chart isn't necessary and people can tell with their logical engineer mind how fast it will be by understanding ho

Ideally frameworks will be simple enough that chart isn't necessary and people can tell with their logical engineer mind how fast it will be by understanding how it works (or better, can implement a POC yourself in an hour). If I can't do that for a framework I won't use it because I'll probably mess up (React is an exception because I will still mess up even if I know 100% how it works).