positivism is good to start works, it is good that you can start doing things. As time goes by you need to be aware that some questions must be raised up, not just accept it positively but keep asking (to be aware) isn't it correct? If we couldn't find the false answer then we would strongly believe (positively) that we are doing (or what we are going to do) is correct.

I am a fan of Kuhn, but I agree with Karl Popper in some extents.