We are thought transporters.

Is the ecological function of us the transport of thought and its products?  We have a mind of thinking, a pair of hands for creating, and a pair of legs for transport.  Thus, biologically, we seem to be designed to have this innate function within Nature.  When all of our biological and collective actions add up, they seem to add up to the ambulation of thoughts and its products. 


Thoughts, when gathered together collectively, develop into facts or factoids.  If considered valid, facts may develop into packaged products ready for distribution.  


So what is valid?