[jamesskarzynski]

Sure, I can see that. But the application of this is such that you can expand it to include whatever sort of validation you need. When you get a list of people who imagine their future best self as being interested, you now have a list of people to whom you can more rigorously validate with. You can send them all an email asking for an interview, pre-order, etc. But regardless, this helps you build that initial list.