The main concern I have with Quantified Self is when it goes beyond the boundaries of personal study and into externalized societal effects. It's one thing when I study MY own data against an ideal (whether another or a statistical norm), because I'm making my own inferences from the data (perhaps with technological or expert help), and I'm making choices about what I want to do with MY body to make those data move in the direction I choose.
The slippery slope starts when Quantified Self data becomes something more akin to a credit score - a test of worthiness within society. While a credit score is (hopefully) based on an objective ideal of how much risk a lender can assume in order to make a profit on a given set of loan terms, it's a fair economic trade to put such a barrier on a specific financial transaction. Imagine, however, an insurance company putting a FitBit-ish device on your wrist and THEY track it against THEIR ideal human, adjusting your premiums/copays/out-of-pocket based on how far you deviate from that ideal. There are PLENTY of very very good reasons why your body might deviate from that ideal, and you may have no control whatsoever over them. Plus, you can technically live without a loan. You probably can't live without medical care.
I want to highlight here that there are some fair uses of quantification in insurance, such as auto coverage. I'm a pretty good driver, have only been in a couple of accidents, and don't have any major tickets on my record. I would probably WELCOME one of those tracking devices in my car (I believe Progressive currently does this), if it lowered my rate substantially. The insurance company would have to HEAVILY incentivize me to turn over so much personal information, but it's possible they could come up with an offer I couldn't refuse. But in this case, if my car gets in a wreck and it's NOT my fault, the insurance company and I both have a clear, objective, and legally undeniable standard. If the officer on scene evaluates the accident and I'm not at fault, the insurance company can't make it my fault. In fact, if they do, I can pick up my business and take it elsewhere because this accident won't be on my record.
No such thing exists in medical insurance, although it would be really fascinating to see some Quantified Self studies start to objectively define medical issues that ARE my fault vs. ones that are NOT.
First comment ever on IdeaChannel, and I guess I felt long-winded! Thanks much for making such great videos - keep it up!