A specific part of this chapter caught my eye, and summed up just about everything in this chapter for me. On Page 135 the text reads,
"That is, no evidence could possibly exist that would tend to establish its(mind-brain identity theory) truth of falsity. This fact certainly detracts from the identity theory's claim to be scientific."

This specific passage is referring to the identity theory, however it seems that it can be applied to all the theories discussed in this chapter. Which brings me to an opinion formed during a previous discussion with my roommate.
Since the mind cannot be quantified in terms of the body,or in any terms, and the mind and body are intermingled to create a whole, namely "ourselves", then upon separation of the body and soul "we" cease to exist. So even if the knowledge can be gained after our deaths, but the mind/soul that lingers afterward, it is knowledge that does not belong to us, but to a part that can no longer be considered "us". In other words, no of us will ever know. Of course this depends on the supposition of their being a mind, but if there is no mind(behaviorism) the end result is the same. Very intriguing to think some are giving their all, and some much less, to a vain pursuit. I personally thoroughly enjoyed this chapter. Good stuff.