When I regularly covered the NBA on a daily basis too many years ago, a number of us promised ourselves that when new days arrived, we would never bore people by talking about the good old days. The notion that the past is always better than the present is a sermon delivered by the aged and, as Pete Townshend once wrote, “Hope I die before I get old.” But having observed the Philadelphia 76ers the last two years, I can’t help myself: Tanking