Our location and trajectory makes us receptive to some and not other avenues of learning. The boy was unable to master the Handan way of walking because of the way he had already learned to walk. The monkey keeper could accommodate the monkeys, but still disagreed with them about the importance of the breakfast-dinner choice. That someone understands and agrees with both of us does not make his judgment correct. The final skepticism concerns whether these paths of progress of perspectives must or will converge on a single outcome. 