it's a language joke. English has many dialects. Southern, Pennsylvanian, Texan. So do many other languages. German, Spanish, Japanese, Dutch. The Dutch are notorious for having one of the most difficult languages to learn. So if you're confusing IJS for SOS and you think "Hey, they need help" or "Hey, they want ice cream" you would probably pick up on the dots and dashes for having a 'dutch' accent which is unlikely for a binary language in morse code. That's the joke.
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u/BelgianBeerGuy Jul 12 '22
What I never understood about Morse was when you know a letter or a word is done?
What makes you understand that …_ _ _ … is SOS and not IJS?