This is an interesting movement but as usual people have doubts. Foster Gamble is a descendent of Procter and Gamble which is a multi billion dollar company.

Following two links on thrive is interesting.

http://thrivedebunked.wordpress.com/tag/foster-gamble/

http://worldwidetippingpoint.com/2011/11/the-thrive-movie-an-exclusive-interview-with-foster-gamble/