This lead us all to a very good economical and technological progress so far, but in a lot of cases i see this fight going too far, where we have pseudo-objective schemes of validation that are completely worthless and while they look a whole lot more 'scientific' their results are no better than rolling a dice.
We need to be aware that people validating this kind of stuff are using patterns based on their former experience to validate better what they are judging.
We need to pay attention and learn with their experience, but also be aware that their denial doesnt necessarily mean you wont make it, because its actually impossible for them to tell you this for sure.
They can only try to calculate who have better chances to succed. And a LOT of people that will actually succed wont get squared up in those patterns, because they are based in past events that are unlikely to repeat (paradigm shifts are pretty hard to predict for instance, because a lot of them come from 'black swan' kind of events).
So you maybe you have a bussiness plan so risky they will calculate that you are likely to fail, they are probably very good to understand the percentage of your sucess/fail rate.. but they hardly can understand your human value to deliver that dream, because this is most in the uncertainty arena.
Maybe some of them will follow their 'gut feeling' and do a very good bet.. but this is beyond what can be extimated, calculated or measured and we need to be very aware of that.
Theres no better teacher than persistence, but one that can learn with its mistakes. And this human-gold value along with others hardly will get detected over some pattern-based human radars.
So my main point is, in the end is up to you to create the means to succeed, and a lot of them have to do with human qualities where most of them cant be measured that way.