It will definitely help to have people from completely different backgrounds understand rationality. People with different sexes is absolutely awesome, because what is being implied here is a genuine non-understanding of the other sex, a slightly alien intelligence. A genuine new piece of information on which much new science can be built. The enthusiasm of George Dvorsky and David Brin for uplifiting animals seems to make much more sense in this light. (I hope that comment didn't violate the rules)

But a certain doubt does arise. When different people with different paths start from different points and try to explain this multidimensional problem, then each begins simple and then as they continue to post, the effort of the others to understand them rises as the inferential distance from new comers on the path increases.

The ability to understand the many paths, to really learn their lessons, to incorporate them within your bones, we have faith that this is possible within one human mind, whichever point it began from.

For the sake of the reason that shall not be named, lets hope this is true.