I guess it is time to define commands whose inputs have great distance in, say the Damerau-Levenshtein metric. For numerical inputs, one might use both the dig

I guess it is time to define commands whose inputs have great distance in, say the Damerau-Levenshtein metric. For numerical inputs, one might use both the digits and the textual expression. This would make them quite cumbersone but much less prone to errors. Or devise some shorthand for them... 156 (on fi six). 35. (zer th fi). 170 (on se zer). 28 (two eig) evens have three letters odds have two. This is just my 2 cents.