It is only when they speak out and explain that their idea is better to be follwed, people will definitely accept it. They need a lot of believe in them and should have that cobfidence to speak out.
Otherwise, their knowledge goes in vain. Firstly, people should have the confidence to speak out about their thoughts be it useful or not.
For example, business, marriage, studies etc., If I want to do a business, I should prepare a plan and time chart and work for that hardly instead writing it in a paper and keeping my hands crossed does not work. I should go out and look out for people who are already in that line, discuss with them and get some ideas. Or even, work with them to have a better understanding about the business. On the other hand, I should arrange for finance, labors, place etc., and so on. Our subconscious mind will start reacting to our goal and one fine day we will surely win and become a business man. 24 hours we should be thinking on this and surely we will succeed. `we should go on trying and trying.