I think you are wrong by saying that we cannot learn from other people's experience because on the contrary learning from others people's experience is even the best because you would be very lucky to have seen someone who has gone through the part you wish to follow and has already understand the challenges involved before arriving at the main point, however let's take for instance those who miss out buying Bitcoin when they had the opportunity to start investing all because of the fear of loosing there investment, so perhaps because of those opportunities they have missed, they have now realize that they have really messed up, so actually they would always encourage investors who wants to follow that part on there Bitcoin investment to change there Method because with the experience they have gotten they no that at the end they may not end up well if they don't change.