Sure, but that doesn’t mean they haven’t improved. Try calculating 99! on a TI-59. I doubt it can do it, and I know the modern TI-30XIIS can’t do it, but my Numworks can (although doing it twice forces it to clear that section of RAM). The calculator space may be slow to improve, as most non-testing calculations have went to computers, but that doesn’t mean they’re not useful, especially with scripting languages allowing me to convert between whatever units I want or calculate anything easily.