You've missed out a group there, it's: * Would-opt-ins * Would-opt-outs * Don't-cares * Did-not-know-that-google-are-going-to-run-telemetrys By making

You've missed out a group there, it's: * Would-opt-ins * Would-opt-outs * Don't-cares * Did-not-know-that-google-are-going-to-run-telemetrys By making it opt-out Google will be conveniently hoovering up the people that would say objects if they knew along with the don't cares.