I came across this video with Adam Savage of Myth Buster fame.
I thought that it was very interesting.
Guy
https://www.youtube.com/watch?v=YhNfeejuByI
This is excellent Guy! Thanks so much for sharing this.
They just need to get Adam Savage to stop behaving like a child (not to denigrate children!), or remove him from 90% of the video.
Andy