Lots of people arguing about the practicality of this, or whether it can be done without invading privacy or slippery-sloping into mass surveillance.
The thing is: Even if it could be done perfectly — giving instant leeway when emergencies occur, being perfectly private forever, with perfectly accurate sensors — I still don’t think we’d want it.
That’s because laws are not just mechanical things. They are social things. When we put up a speed limit sign, it’s not just to configure a number in the driver’s mind. It’s to remind them to think about how they’re interacting with the community around them.
De-emphasizing that responsibility runs counter to this social purpose, which I think we intuitively understand at some level even if we reflexively bring out other claims in order to object to the policy.
Copyright duration and rules are ripe for a complete overhaul, but it is worth noting that the so-called “Mickey Mouse Protection Act” really just put the US in line with the other countries in the Berne Convention, which the US had dragged its feet on signing onto for decades. Once the US agreed to respecting international rules for IP, offering a shorter copyright duration than Europe was an obvious disadvantage.