[grobolom]

Something that is tied to the "Where are the customers?" point - conducting mini-'interviews'. Sometimes direct competitors are tough to come up with, but asking people if they would use your product (or at least think about it) would make a pretty good case.

[sainib]

Definitely! There is more due deligence that needs to happen before you finally begin the execution but out of tens of ideas one may have which one should you pick to even discuss with the potential customers is what I was getting at.