John Locke's Argument

I find the most problematic point is Locke’s argument to be the simple fact that there is not legitimate verification for his argument. Sure it is reasonable to suggest that no one can be born with the same principles, although where is your factual evidence? How can he prove what others were born with? While Locke does have a solid theory, he needs to provide more evidence such as a study done on if humans are born with prior knowledge to the world they will live in. If something like this was to be provided, it would make his argument stronger and more probable. Without solid evidence, this argument is unfortunately unconvincing.