""In terms of due diligence there is not much to analyse except a team and an idea expressed in a business plan." Do you see this as reality, or is it a scenario you are setting up for this debate? I ask because here in Silicon Valley…"

"What about evaluation through customer development / lean startup concepts? i.e. what customer feedback are they getting, and how are they pivoting the business model in their search for a business model that works?  Any ideas on how to help…"

"Hi David, I am relatively new to the business model canvas, but I use a range of tools of which the Business Model canvas is just one. A good tool for assessing viability and market dimensions has been developed by my good friend Lars Welinder.…"

"A number of comments are asking for the tool - I also missed the link in the reply from David at the bottom of the first page. Here is the link from that reply in case you missed it: Tool Spreadsheet"

"Hi there David...thanks for sharing this. I'd welcome the excel tool, should you have completed? I found this very useful..nice job!"

"Hi David, tried to find the literature, without success. Could you specify the source of  Morris, Schindehutte, Richardson, Allen (2006)? Harald "

"David, This is awesome. Thanks for sharing.  Berke"