What are the signs of an ultra smart person playing dumb?


Answer by Christopher Reiss:

Silence.

               Michael Corleone (Character) from The Godfather (1972)

Stealth intellect has a slack expression, does not react, does not laugh, does not challenge, does not question.

It sits quietly, like a coiled snake, soaking up everyone and everything, until it makes a sudden move at the time of its choosing.  You don't want to be in the path of that strike.

What are the signs of an ultra smart person playing dumb?