If you don't understand "why something works" then you will certainly not be able to answer "why it doesn't work". Every high level library is an abstraction a

If you don't understand "why something works" then you will certainly not be able to answer "why it doesn't work". Every high level library is an abstraction and abstractions are leaky. I'm not saying you have to be able to write assembly by hand. I'm saying you should understand why your code runs 10x slower in docker.