Knowledge

I don't know, after our discussion in class I just cannot fathom the idea of people trying to answer these questions that can be deemed as unanswerable. The questions "Why do we exist?" "Where do we come from?" Are there people out there who dedicate their life to this and actually try to find the answer? The answer I believe is that people are necessarily going to believe what they believe. They may not want to expand on the "lower knowledge" they have to gain "higher knowledge" that is spoken about in Chapter 6. Can we actually generalize knowledge? Can we actually give one basic definition to knowledge? How do we actually measure knowledge? These are questions I have been wondering about because of the class we had on Monday. I do think it is wrong (maybe ignorant) to pretend you know the answer to something, when you have no clue about the subject at all.
Another thing that was brought up in class, evil is a result of ignorance. I don't know how I feel about that. I mean I understand that this could be the case, but it isn't all the time. Some people just have no conscience. They know what they are doing is morally wrong, however they just do it because it makes them feel better about themselves. They aren't ignorant so to speak, they are just evil and don't care. Some people do say to themselves hey I do know this is wrong but I don't care, I wouldn't call them ignorant. I would just say that they just don't have any self control and are slaves to their own selfish manner.