In most of our modern-day communications, we have a built-in copy-editor: the spell checker. This handy little system lets us write with a bit more abandon, knowing our typos will be caught. And that ...

Perhaps the most obvious way to build a spell checker is by simply looking up each word in a dictionary. With modern hardware this wouldn’t be too hard, but disks in the ’70s were extremely slow and ...

Spell checking is such a ubiquitous feature of today's software that we expect to see it in browsers and basic text editors, and on just about every computing device. However, 50 years ago, it was a ...