idk "it will be really useful" is a bit too fuzzy and vague -- how do I infer about numbers related to return-in-investment?

of course, it's better than "this is so crap no one would buy it" -- but for investors, they want to know: "if I put X dollars now, would I get 10*X dollars or 1/10 X dollars?"

it's weird that all these comments on "usefulness" doesn't even attempt to explain whether the numbers add up ok or not