My phone doesn't autocorrect radicles because it's actually a word as well, so I'd wager he spelled it wrong on accident and autocorrect didn't pick anything up. I'm not using an iPhone so I don't know if it autocorrects to radicals there or not, I would assume not, but if it does, well maybe there's something to him misspelling it, if it doesn't then I start leaning towards just an accidental typo even more.
Spelled radicals wrong. Hmm.
did he?
My phone doesn't autocorrect radicles because it's actually a word as well, so I'd wager he spelled it wrong on accident and autocorrect didn't pick anything up. I'm not using an iPhone so I don't know if it autocorrects to radicals there or not, I would assume not, but if it does, well maybe there's something to him misspelling it, if it doesn't then I start leaning towards just an accidental typo even more.