[javajosh]

Its an interesting concept, and it keeps being reinvented over the years. Sometimes people even dump their measurements into the public domain, often via an HN post!

There is a nice symmetry here, too, in that such a tool could be a force for great good, but it could also be used as a force for great evil. Such a tool would give "you" (the thinking, rational, speaking you) a great deal of leverage over the behavior of your future self using the same techniques honed by Tik Tok, Facebook and Twitter. It would give you a great deal of awareness and control over your Situation, to assess and minimize risk. (The application to opportunity is harder to imagine than risk, but I'm sure it's there, too.)

Certainly there's nothing physically impossible about such a system ultimately being under your personal control, with an ur-5th amendment protection against intrusion, and civilizational infrastructure to guard against intentional and unintentional hw and sw flaws that subvert that protection guarantee. But all of that would require a real and dangerous commitment to individual autonomy and responsibility on par with the 2nd Amendment. Do the risks of making bad people more effective outweigh the benefit of making everyone more effective? How does that tradeoff compare with a similar tradeoff around the 2nd Amendment?