Calculators don't think for you any more than a slide-rule or a pen and paper does. It takes values and operations that you instruct and then all it does is the part that's entirely deterministic and repetitive. My computer is an extension of the same thing, and most of those extensions don't reflect a replacement of anyone's thinking. No one was previously able to send electronic signals and reconstruct them into web pages for example, that's a new and unique capability that augments our own. "Write my blog post or my code for me" is an entirely different prospect which yes includes, but isn't limited to creativity.