David Siegel recommends working with these people and groups, who are world-class experts in their fields ...

Hubbard Decision Research - decisions, estimations, models, training, calibration, education. 

Analytica software - far better than spreadsheets.  

Consulting by Lumina - decision support in Silicon Valley.

Sam Savage - informational designer/modeler extraordinaire, at Stanford.

Loroch Partners - teaching biology to executives and business people. 

Diversity Consulting - based in London.  

Brand New Purpose - branding with a purpose in San Francisco.  

BrandPie - innovating branding in London. 

Siegel Vision - Alan Siegel's simplification group in New York. 

Greg Satell - media thoughtfulness meets statistical analysis. 

Maximum Change - experts in flat company structures and self governance.