Over my lifetime, I have met and worked with many intelligent people,and most lack good judgment. They have no common sense, and that is what I see with Ted Cruz.
My ex BIL is one. Born and raised in Southampton, NY to 2 surgeons. The whole 8 bedroom and 12 bathroom upbringing.
2 PhDs and from Stanford and Harvard Med, but absolutely clueless about real life outside Academia.
He knows what he knows very well, but little else.