Re: Pondering the absence of the wheel in Mesoamerica civilizations
Somewhat related:
Easter Island walking statues.
http://ngm.nationalgeographic.com/2012/07/easter-island/walking-statue-video
I move big objects, like refridgerators by walking them in a similar fashion. This might even be better than the wheel in some situations...Stonehedge, Inca buildings, Pyramids, etc...