tl;dr - Use pure functions - Avoid mutability - Limit use of classes - Strive for idempotency - Use lambdas and higher order functions sparingly, only when

tl;dr - Use pure functions - Avoid mutability - Limit use of classes - Strive for idempotency - Use lambdas and higher order functions sparingly, only when they actually simplify the code - Use generators where applicable All in all, it's good advice which shouldn't be ignored just because she works at kite. She should probably go back and proof read the article and fix the code and terminology errors, though.