ASK DR. BOLI.

Dear Dr. Boli: To settle a bet, what is the greatest human intellectual accomplishment of the twenty-first century so far? —Sincerely, An Invet­erate Gambler.

Dear Sir or Madam: The greatest human intellectual accomplishment since January 1, 2001, has been teaching our AI bots to say “uh” every so often when they call people on the phone to scam them.