Easy, let them make predictions and then test them. Set a prefixed set of parameters where to start of with and verify the test results. I would suggest going to http://www.randi.org which is the website of James Randi and the JREF. There you can learn a lot about debunking woo.
Best regards,
Leo van Miert
Horsepower is how hard you hit the wall --Torque is how far you take the wall with you
Leo van Miert
Horsepower is how hard you hit the wall --Torque is how far you take the wall with you
