Joe Biden announced his campaign for re-election, but the markets still give him less than an 80% chance of securing the Democratic nomination for president. Perhaps foremost among trader concerns are questions about Biden's health.

To investigate the issue, Tessa Barton, a computational photographer, AI Research Scientist, and political gambler, has compiled a video database of Biden.

Tessa comes on the show to explain what computer vision tells us about Biden's cognitive decline and discusses how to bet on her insights.

Follow her research at BidenHealthChecker.com.