Because I can't know that they must find evidence of many came to confirm a thing we seek confirmation by this approach, because it will be required to find all the evidence.
I do not know how many yet to find evidence to confirm the universality of what we seek to confirm that this approach is valid only when all the evidence was.
Because we cannot know how to evidence of how much to confirm the universality of what we seek for confirmation according to these guidelines is correct when they find evidence to all.