Wonder who this is meant to appeal to? 
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Presumably, people who want to learn to program but who don't yet 98% grok what strings are. Totally a legitimate email to send!
End of conversation
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Maybe they just want to help you learn various styles of knot.pic.twitter.com/zWQ5BVrZFE
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I got that too, and it read like the only reason you wouldn't have done their challenges is because you can't do them.
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Me too. Instantly thought of i18n, multibyte wide strings, char sets, "length" as function of glyphs vs bytes. Closed email. Sighed deeply.
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