There are still "hard" problems to solve when it comes to spellchecking. For example predictive text and correct typo detection. Notice what suggestions the Fir

There are still "hard" problems to solve when it comes to spellchecking. For example predictive text and correct typo detection. Notice what suggestions the Firefox and chrome spellcheckers give you versus what happens when you use google or mobile phone autocorrect. There are still differences in spellchecking speed, quality, and UX.