The term "probative data" is widely used these days. It's cutting edge. Probative data is essential. What these words mean is that the accuracy of the information has to be checked. If that is not done, money will be wasted and it won't work. If it happens to work—so much the better if it does—verification will come afterwards.
For example, people shouldn't believe what I might say about Montmorency Falls simply because I happen to live in Montmorency. If you want to check the information, you have to go there. I shouldn't be considered an authority or more knowledgeable about these falls than anybody else. Definitely not. The scientific community needs to verify the facts.