I was unfamiliar with the terms(packers, mappers) you used in your last sentence. Having done a quick read on them, I find the concepts interesting. It looks l

I was unfamiliar with the terms(packers, mappers) you used in your last sentence. Having done a quick read on them, I find the concepts interesting. It looks like at least a couple books talk about these concepts. Where would you recommend reading more about them? It must be noted that I am not convinced from my <1 page of reading that people are truly divided into only two camps in this category, like the philosophy seems to suggest so far.