Amy Schumer’s missing edge: Has she outgrown her own show already?

The ad campaign for season four of Comedy Central’s “Inside Amy Schumer” is, as is characteristic for Schumer, uncomfortably on point. In a few different spots, a doctor diagnoses the comedian with the medical condition of “overexposure,” with the resultant connotations of sunburn, radiation poisoning, or, you know, public nudity. For Schumer, it’s both her network and herself acknowledging that for the last several months, she has been everywhere at once. In