Imitating

A casual statement in a Journal Club article in the Journal of Neuroscience set me thinking: what if an infant were confronted with two people doing some common action, e.g., tying shoelaces. However, while one of them is an expert, the other is not. (a) would the infant be able to discriminate the two? (b) would it choose to imitate one adult over the other? (c) would infants exposed to the expert be more faithful in their reproduction of the action? The point is, if imitation is "dumb", then one shold imitate anything at all. But, if imitation is smart (a la György/Gergely), then infants might be able to compute efficiency and prefer to imitate the expert.