Have you seen the GE commercial? Millenial son informs mom and dad that he has gotten a job at GE. Old-fashioned dad is enthusiastic: "proud of you, son. GE! Manufacturing!" He hands son "granpappy's" heavy old hammer. Son gently explains that rather than building "powerful machines," he'll be writing computer code. Disappointed dad: "he can't lift the hammer." Mom, with more compassion than conviction in her voice, consoles son: "it's okay though: you're gonna change the world." On today's Morning Joe, Mika Brzezinski used that "change the world" line to mock Marco Rubio and Ted Cruz in the face of...