The point is that there's plenty of high level, technical, and nuanced communication that can only happen between experts. The expertise isn't documented anywhere (unless you count previous email exchanges), it's not somehow represented in a database, and often times decisions are highly specific to one particular situation. Asking a non expert to fulfill this role is difficult enough. I'm not convinced that this is a problem solved by technology.
There are things that I'm not good at that I'm better off not spending time hacking at to do a mediocre job--e.g. web stuff generally or design--but that's really something else.