This week’s episode of “Star Trek: Discovery” has a classic Star Trek character, the arrogant guest-star mad scientist! Stamets looks in the mirror and thinks maybe the new guy is a little too familiar. Culber gets a pep talk from our favorite mysterious man, Kovich! And Michael Burnham gets to tell off a functionary about his stupid society, in classic Kirk style—but only after making a difficult decision about the fate of a prisoner.