Tivonasays...

I would say that it's very simple to tell the difference between S and N types:

S types want to do what has been done before, because it's the tried and true method. They trust what has been done in the past. They like following rules and traditions. They think theorizing is a waste of time.

N types are dissatisfied with the way things are. They can imagine a better way. They like trying new things. They question and criticize rules and traditions. They like pondering theories.

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