The from the blog post that the term “outboard brain” originated, by Cory Doctorow back in 2002:
It’s my personal knowledge management system, annotated and augmented by my readers. […]
Being deprived of my blog right now would be akin to suffering extensive brain-damage. Huge swaths of acquired knowledge would simply vanish.
In 10 years, this has evolved into tools like Evernote, nvALT, OmniFocus, and countless others to improve the collection and avoid the loss of information from our poorly built brains.