1. facts, information, and skills acquired by a person through experience or education; the theoretical or practical understanding of a subject.

2. awareness or familiarity gained by experience of a fact or situation.

Speaking of knowledge, you seem to be strangely unable to recognize the limitations of yours, even when a thread is full of people discussing things of which you are utterly ignorant. And I choose the word ignorant deliberately - you don't just lack knowledge, you choose to ignore that which is inconsistent with your existing knowledge, at least on this topic.

Of course, there is a very simple solution to this, but for reasons I doubt you are interested in, you will likely choose to remain in your current state, which is well within your rights.