there are many alternative path to a successful strap, some that overlaps and some that are exclusive, this checklist seem geared toward ideas suitable for vc funding which isn't wrong per se but if you optimize for funding you end up with a diametrically different path that is usually not easy to bootstrap. it's something one has to decide early and influences the very shape of your startup, so that each one of those question would be invalid for the other path. corollary: I've got a checklist for bootstrapped startup, concerning the idea itself, and the line of questioning is really different