The 2017 Summer Television Critics Association tour began yesterday. Approximately 250 critics from the U.S. and Canada will during the next 16 days enjoy somewhere in the neighborhood of 200 press conferences and events at the Beverly Hilton Hotel and elsewhere in Los Angeles, learning about hundreds of new series and specials set to debut on broadcast, premium cable, basic cable and streaming services in the months ahead. Most of the journalists in attendance will at one time or another grumble about the TCA tour being some sort of endurance test. It’s true -- there are no days off during this one of a kind event, from beginning to end. And there is much work to be done all day, every day. But pay no attention to the complainers. This certainly isn’t the only gig out there that requires a lot of stamina, but it is definitely one of the best. And in this era of Peak TV, with its insurmountable output of new programming coming from every direction, TCA has never felt more essential.