If like to point out that word processors existed well before DOS, and that DOS itself didn’t exist until many years into the personal computer revolution.

To this day there are people who still use Wordstar, for instance.

I am well mistaken -- TIL!

(forgive me -- i probably should have used 'command line' instead of 'ms-dos'. it's just that ms-dos was my introduction to computers, and so felt like the 'beginning of all time' of systems to me.)