However, even after the mental barrier is removed - Majority of us do not have the motivation to actualize our visions even after we know and believe that they are feasible.
I suspect that it takes a special human emotional/energy makeup to overcome enormous obstacles in pursuit of actualizing a vision. Thats what makes entrepreneurs/hustlers special.
Much of the time the decision not to pursue the vision is the right one, because so much sacrifice is required. A lot of successful entrepreneurs have tragic personal lives because in the pursuit of their vision they sacrifice their families. For those of us who are perhaps older, with a lot of personal commitments, and perhaps are also economically comfortable, those sacrifices are too great.
It just comes down to being able to give it a try, mainly from having a combination of low failure cost and high success probability.
Person saying it cannot be done, should not interrupt person doing it.
In other words: believe what you will, as long as you don't get in the way of someone who's busy doing what you think is impossible.
https://news.ycombinator.com/item?id=36766556#36768937
Like with trading systems, the thing that made it work here was not being smart about the maths. In fact anyone with high school maths would be able to work out when it was worth doing.
The thing here was the audacity to try to put together a business around getting it done. Things like getting investors, figuring out how to print the tickets, and delivering them.