Common sense is the complete stranger from whom we’ve grown apart. This week, perhaps the same as you, I learned something I never before considered, let alone gave a first thought: The expression “cotton pickin’" — as in “wait a cotton pickin’ minute” — is racially insensitive, if not a free-standing racist expression. Having never before considered that, it makes sense as black slaves served as America’s cotton pickers. I don’t recall ever speaking or writing the expression, but I’m now sensitive to the good idea that I never should.