Difference Between Thin Slicing

In my opinion, the difference between thin slicing and prejudice/profiling/snap judgment, is that thin slicing is reasonable conclusions based on comparing logistic patterns learned from past knowledge and key details that you notice in the present, while prejudice/profiling/snap judgment are decisions that one makes based on limited and superficial information (that may or may not be relevant to one's decision) and bias, which more often leads to bad choices than thin slicing.

I used thin slicing to make a decision all the time back in my days as a live music sound engineer at a crappy venue. Sometimes when it's already on show but unpredictable distortion/feedback or a technical breakdown occurs, and it's impossible to perform a line check