I gotta say I understand the cost. Dig a full size grave by hand some time. It's freakin exhausting. And sure, an excavator can do it in minutes, but that means you're paying for time on a very expensive machine.
Heating is easier than cooling. For heat you just run a set of lines from the source to the homes, same as plumbing. To dump that heat into the ground, the field you need grows very quickly. A small town would need a large, and probably deep field of pipes. The cost would be huge. Geothermal is great, but digging is hard, so it's relatively expensive. Every project needs to be individually considered, to determine if it's really the way to go.
No swappable battery = useless. I don't care if it has longer battery life, it's going to run out of charge when I need it at some point.
Just realize the hole he dug is probably the bare minimum to handle the heat load from the smallest window AC. It takes a lot of digging to cool a real AC unit. And European homes aren't known for have large yards.
Aside from congress typical MO of fixing things only when absolutely necessary, and at the last second. The current administration has made clear they will cut Social Security if given the chance. With the progressive left starting to gain ground, that's going to be an easy campaign to message on, so hopefully we end up with removing the cap, rather than cutting benefits.
A microwave oven emitter and a DIY wave guide.
I think the evolution of drones will eventually lead to a new aircraft system. A multi rotor configuration powered by a turbines, and capable of lifting loads similar to, or greater than, an Osprey. Mainly as a cargo system for moving large factor ammo, like drones, missiles or artillery shells. But also capable of moving supplies or being a quick evac.
To be fair, the right wing war on the VA has made it a spotty resource. Some facilities have outstanding care, some make you wonder if it's safe to enter.
In other words the same 'law' that Trump and MAGA are trying to bring back. Make shit up and prosecute people we don't like.
There was more jurisprudence at a witch trial.
Ropes only tangle when you don't want them to.