I've got almost 30 years of notes ... those notes have proven prior art for patents I didn't believe in and establish the date of invention for work I've create

I've got almost 30 years of notes ... those notes have proven prior art for patents I didn't believe in and establish the date of invention for work I've created. There are good reasons for scientists and engineers to keep a notebook but the traditional paper version isn't nearly so searchable as something like the author is describing. P.S. Sometimes it's funny to see a grocery list from 15 years ago and see how my tastes have/haven't changed.