Well when scientists wish to learn something, they use the scientific method. The first step is to observe something/could be a problem. Then ask a question about it. Form a hypothesis, or a possible answer to that question. These are the first steps.
Further steps include setting up an experiment and results, etc, but I think you know the rest! Hope this helps!
The policy was called “Don’t Ask, Don’t Tell”.
China had 5000 years of Chinese history
Prof. Yunus, in a letter to the members of the Grameen Bank on your departure from the bank in 2011 you wrote "I thought that if I were to lend money to the poor, than the villagers could be free from the grasp of the loan sharks. This is what I did. I never imagined that it would become my calling in life." How do you feel about the work you did with the Grameen bank for Bangladesh?
It's a great thing that people responded to it very well. Today, Grameen bank has about nearly 8.5 million borrowers. 97 per cent of them are women and they own the bank. It has grown into a nationwide institution which grants for loans for itself.
We give money so young people from poor families can go into higher education. We created a nursing college, so that the young girls can become good quality nurses. And we have created health care services.