I WANT to Debate, But They Keep Running Away!

Each year my daughter gives me a Dilbert desk calendar for Christmas. Here's today's oh-so-accurate 'toon:


So far I've had "successful" debates with Jack, Alex, and Dr. Danny Cline, some short exchanges with Professor Saul Cornell, Laura Washington, Dr. John D. Kelly IV, and James Kelly of Scotland.

I'm sure there've been a couple more, but those are the ones that come immediately to mind. However, the invitation to debate is most often declined.

I wonder why that is?