If I take a subway next to you, and you get Covid from my cough, no amount of probing from manual tracing can reveal our link when we're strangers. You can't ca

If I take a subway next to you, and you get Covid from my cough, no amount of probing from manual tracing can reveal our link when we're strangers. You can't categorically say "manual tracing by trained personell is superior". The apple / google proposal is designed to minimize the ability for abuse from surveillance states.