Mac,
This is one of my favorite Denis insights
"The problem is that if you demand proof before you will believe in something,you we never create anything. You must believe before you will see ( not the other way around)"
http://www.kba.com.au/pdf/Does%20the%20Economic%20Rationalist%20Have%20the%20Answers.pdf
Commitment, scary for some.
They will poke fun .