The lack of adoption of stylus-based input is very disappointing. I'm always floating in random scraps of paper with notes, derivations, etc. I've always found note-taking, especially when math is involved, much more natural with a pen than with a keyboard. The article does a good job of outlining why that is. I'm not alone; just think of the likely penetration rate of Moleskines among HN readers.

On the other hand, it's ridiculous that the only way to digitize these notes is by scanning, or typing them in, or using linux-unfriendly Livescribe pens that require special paper. For centuries we've interacted with documents using styluses. For doing math, for marking up papers, for scribbling notes in the margins, and for countless other activities it is simply _the_ right tool for the job. People like Steve Jobs declared unilateral war on styluses because they were being used to design suboptimal interfaces. Jobs had a point, but in rejecting the stylus outright, he threw the baby out with the bathwater.