One of the great principles of science to my mind is that of uncertainty, or tolerance. The history of medicine, and science in general, is full of instances when cherished long held beliefs have had to be discarded in the face of new evidence. This happens because some individuals question accepted wisdom, and investigate it. Some areas of practice fail to live up to that scrutiny and we all have to take on new ideas as a result. This is how science advances, through the acknowledgement that we may be wrong.
When an area of science is repeatedly investigated, and results confirmed, this adds more and more credibility to that area. If we try really hard to disprove something, and fail, that adds great credibility to the theory under investigation. It follows then that scientists should be prepared to gladly open their data to scrutiny, and to encourage others to try and disprove their work.
I have recently come across a quote from an eminent scientist. I'm not going to identify him, or his field, I don't want to get distracted by the subject, but stick with the principle. He is quoted as saying;
“We have 25 or so years invested in the work. Why should I make the data available to you, when your aim is to try and find something wrong with it.”
To my mind this man has become lost in his own ego. He appears totally unwilling to have others see his data, or test his theory. He has crossed the line from being an open minded scientist of humility, and become a quasi religious figure demanding respect for his dogma. What a complete knob!