James Randi Lecture @ Caltech - Cant Prove a Negative
Channel: JamesRandiFoundation
Date: 2009-11-05

James Randi lecture excerpt from a 2 hour lecture at Caltech in 1992. 

James Randi explains why you can not prove a negative. The burden of proof is on the person presenting the claim. He then goes into an example of how you can't prove that Reindeer can fly.