Yes, scientists are smart. That is, they memorized information. But some don't use critical thinking. Critical thinking is supposed to be used by judges who have to evaluate which person is lying. One can't merely absorb all that he hears without verifying whether it is true or not. Theists, too, memorize, often without questioning (questioning might be construed as blasphemy). Theists must swallow everything that they are told and they are too afraid to ask if it is right.
Sometimes scientists can do dumb things. For example, a scientist might try to extract energy of tidal forces from an orbiting moon. I don't mean just harnessing the tides in the ocean, but actually slowing the orbit of the moon. This might cause the moon to fall out of orbit and hit earth.
The moral to the story is: "When the moon hits your eye, like a biga pizza pie, that's a moron."