Sleep as Android!

You can make it device administrator and additionally add a max snooze count and a dismissal CAPTCHA. When I REALLY have to get up no matter what, I need to go physically touch my phone to an NFC tag in the living room. Can’t even turn the phone off because it blocks that when ringing when given admin access.

9 is objectively better if you have untrusted inputs and need a stable failure mode.

This is questionably accurate.

It’s not just a matter of building the rail, it’s also redesigning the urban sprawl. That’s a LOT of new construction of buildings needed, too. That comes with new utilities, etc. And cement is a huge carbon source.

There is a time scale over which that’s more carbon efficient than replacing all personal vehicles and their replacement lifecycles, but it’s very unclear if that’s actually faster with regards to climate change timelines.