Doing smart or taking advantagious actions is not only only for animal scale

“The researchers showed that these nanotubes connect bacteria of the same and different species. Via these tubes, bacteria are able to exchange small molecules, proteins and even small genetic elements (known as plasmids).” Calls into question what scale should we consider actions random vs. puprosefull. http://www.sciencedaily.com/releases/2011/03/110302080003.htm