Inasmuch as the crowd you choose to fit into can correlate with other behaviors it may be perfectly reasonable to make objective biases based on appearance (ver

Inasmuch as the crowd you choose to fit into can correlate with other behaviors it may be perfectly reasonable to make objective biases based on appearance (verbal or otherwise). When push comes to shove and you need to actually decide what your assumption is, you're going to assume something, it may at least have the best possible shot at being accurate. Even Jeff Foxworthy would often joke that he wouldn't want to be operated on by someone who talks like he does.