I'll take a swing at it. I'm curious how I'll do if I just wing it.

Logic is a set of rules that can be used to form repeatable results based on given information. It's often built using one's own knowledge and experience. Logic does not require producing accurate results. Flawed logic is still logic. Logic also does not guarantee that the results are the desired results, this is sometimes described as "garbage in, garbage out".

Is that satisfactory?