No, you're right. The point is that the number of dictionary lookups is orders of magnitude less than the other dictionary-based solutions that have been proposed. Instead of looking through all the N-letter words and seeing if they meet the rules, you generate the set of letters that meets the rules and figure out which orderings are valid words. So, you go from "All N-letter words" to "N! dictionary lookups".
Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.
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