It is certainly true that there are many calculations that are difficult, if not practically impossible, without the aid of a calculator. The article “Calculations You Would Never Make without a Minicalculator” (Litwiller & Duncan 1977) illustrates a sample of these. All of those mentioned involve lengthy multiplication and division much in the fashion of problems for which a slide rule was helpful. This is to say that the results were obtainable with the use of logarithms, I have found that there is another class of problems for which logarithms are some help, but even the use of these is tedious. Here a scientific calculator is needed.