@magitism of course, thank you for your reply.
I used it in a command-line tool to find a misspelled option. Generally, it's handy when you have a list and need to pinpoint the closest match to a given input. Fixing a misspelled path against a list of valid paths is another practical use. It's also useful when comparing simplified DNA sequences or finding similar sequences in a series of game steps. While a basic similarity function, it may not be the most effective in all contexts.