Knowledge is the flotsam on the river of conversation

Michelle said you don't need to talk to everybody because you can get knowledge from the internet instead. However most women speak to each other for the phsychological reward. It's like conversing activates their neural reward systems. It has nothing to do with exchanging actual knowledge. However, in that flood of conversation, bits of knowledge do tend to transfer, like flotsam on a river. It may be that nature evolved this method of communication to makes sure those bits get across. Why not just say them directly? Well maybe it's too easy to lie. The stuff between the lines might actually come through with better signal to noise ratio.