Yes, but 'proven' in relation to the currently prevailing paradigm. There can, occasionally, be 'paradigm shifts', however:) .
BTW, in answer to the thread title : if they exist and they're coming here, then why not?
lol - It can be, yes, but it is useful as a corrective to the all-inclusive claims made on behalf of experimental empirical 'science' - which is only one method of 'knowing' the world dictated by a specific 'technological human interest' : there are others:) .
While it is true that a thoroughgoing epistemological denial of certainty can lead to absurd results in relation to the status of one's own statements about knowledge, can I point out that my post did not argue for such a denial at the general epistemological level.
To deny that...
Scientists don't 'know' anything when knowledge is defined as 'certainty' rather than what is, really, (fallible) induction from the evidence. Scientific method (in the 'physical sciences' at least) is one which allows for 'falsifiability' rather than a method for providing 'verifiability' in...