I always try to remember the quote "Those saying a thing is impossible need to stay out of the way of those doing it"

A important word doing a lot of lifting here is "doing". talk is cheap, the problem is never lack of ideas.

Agree 100%.

If you are doing it yourself shoot for the moon. If you want other people to work on your idea, then yeah you better be able to explain to those other people why the result would be worth it and why the approach is viable (or pay them not to care)