It makes one wonder, 47MB of <i>what</i>? I don&#x27;t have Win10 so can&#x27;t easily find out, but for comparison I do happen to have an old version of Mathematica which is command-line only, and it&#x27;s a little over 7MB (considered huge at the time - it needed 6 floppies!) I doubt the Win10 calculator has anywhere near the functionality of Mathematica.<p>XP&#x27;s calc.exe, which doesn&#x27;t have all the annoying bugs mentioned in the article, is 112KB.