I am the world's worst C programmer because it's so complicated I can't understand it [...] All I know is that whenever I write C, my pointers are al… - Joe Armstrong

Pipelines is the most important word. So a Monad is a pipeline. It allows you to pipe an output of a function to the input of another function. They rediscover the pipe.

Your first question must always be: what is the most difficult part of this problem that I am trying to solve and then try and solve that. If you can't solve the most difficult bit, give up! Seek advice, find somebody who can solve it!

I was programming Prolog []... What happens when a Prolog program goes wrong? it says no. There "no" is not a very good error. Core damage is much more informative for no.