Like what? Are you, perhaps, confusing "hard" with "time consuming"? Some things take a long time to express in code (absent AI, at least). It's not hard, though. It's just rote copying down what you have already determined "what needs to be programmed". Getting to the point where it is just rote copying can be difficult, but is decidedly in the "what to program" phase.
Giving an example will take too much time from my perspective in regards to how much time I am willing to spend here arguing. Have a great day