I love the idea of personal data analysis. In fact, I recently wrote a book with that premise called "Everyday Data Science". I just wrote about it in another

I love the idea of personal data analysis. In fact, I recently wrote a book with that premise called "Everyday Data Science". I just wrote about it in another thread, but it seems relevant to the discussion here. I definitely agree that you can really take control of your life with a bit of data and some not so fancy analysis. In the book I shared the story of an old professor of mine that tracked a personal health marker from yearly screenings. The threshold for concern was "4 ng/ml". His numbers were always right around 1. However, there was a super noticeable trend up to 2.5 and 3. The doctors all waved it off because it was still below the magic "4" number. However, when he showed them the graph of historic data, they rushed him to a specialist and detected (and removed) cancer. I think data collection and personal analysis for day-to-day stuff is vital and fascinating. Thanks for sharing :)