Having lots of friends and a diverse audience (Build a diverse network) is great to Get more parts on the table, but completely useless if I don't talk to them. By bouncing my thoughts off of them, they might be able to connect some of them to something I had not considered before.
The scaled version of this is Work in public. That makes it possible for my audience to serendipitously stumble upon my thoughts without me having to do an active action. (Have an aptitude for serendipity)