Many of us here have frequently mentioned that they feel a source is valid, that it feels right. While I do believe that this can be a valid way to discern the truth, I don't think we should rely too heavily on it. It's important to recognize that unless you grew up with no TV, our feelings about many things have been influenced by mind control techniques used on us as young children as we sat and watched the Saturday morning cartoons. Alan watt speaks of the specifics of the mind control techniques that we have all been subjected to.
Also, related to this topic, Judy Wood speaks about her new book and the importance of using tons of observation before making any judgements when trying to piece together a puzzle.