Funny, once I have the assumptions written down, I've found it's pretty easy to test them. For instance, I looked into a "turbo tax for personal bankruptcy" id

Funny, once I have the assumptions written down, I've found it's pretty easy to test them. For instance, I looked into a "turbo tax for personal bankruptcy" idea, and one assumption was "people considering bankruptcy have an internet connection". That was easy to test - when I talked to my target market, I just asked them about their internet connection. Turns out that's their lifeline to the world and they would never give it up - I got the impression they'd practically starve before turning off their internet connection.