It’s hard to overstate just how good recent economic numbers have been. On Friday, we learned that job growth is still solid while unemployment remains historically low. I think it’s safe to say that Donald Trump’s 2020 prediction that a Joe Biden presidency would mean a “depression” — a claim he’s now repeating by predicting a “great depression” if Kamala Harris wins — didn’t come true. A week earlier we learned that inflation has continued to decline and is now more or less at the Federal Reserve’s target of 2 percent. This success has defied the view, held by many...