It's really nice and I'm a fan of the man but... Even back then it was a really simple spellchecker. Back then stuff like the "metaphone" and "double metaphon

It's really nice and I'm a fan of the man but... Even back then it was a really simple spellchecker. Back then stuff like the "metaphone" and "double metaphone" algorithms already existed (suggesting candidates based on similarly sounding words). Fun algorithms 'em metaphones I'd say. Relatively easy to implement/port (been there, done that). I'm sure there's better stuff now. Also it's possible to better ranks candidates to fix typos by taking into account the layout of the keyboard (e.g. on a QWERTY keyboard is you see "wery" it is, despite having an edit distance of 1, highly unlikely the person typing meant to type "very". "weary" is much more likely). So just sorting by edit distance and then suggesting the most common word often doesn't result in the best candidate being shown first. And then context. Ah, context. I type this and my browser isn't aware I'm talking about algorithms and not only says "metaphone" is incorrect but suggests "megaphone". So... The matter still isn't settled if you ask me.