After the debacle that was Mexican Week, the producers clearly thought about what themes they could employ that can’t possibly offend anyone. That’s why we had Autumn Week, because a season won’t cancel anyone. Now we have a throwback to 50 years ago (wow!) with 1970s Week. No one can get upset about the decade that gave us ABBA, disco, avocado-green dishwashers, and Charlie’s Angels. Even though plenty of us were born in the ’70s or survived them, a decade has no constituency, no one to be offended.