One reason that the UK has few trash cans is because of the IRA, a terrorist organization[edit: paramilitary organization] that would plant bombs in them. It is kind of a sore point when Americans notice stuff like this, because US citizens were significant donors to the IRA.
N.B. There isn’t a reason why you should know this.
I have tried freecad a number of times to replace solidworks as a critical piece of closed source software in hardware development toolchains. I have always struggled. Yesterday someone spent an hour with me at a makespace saying… “FreeCAD has a different way of doing this/try realthunder branch/use symmetry condition/delete all conditions that coincide” … it has been worth years of trying alone. When I started solidworks the reseller gave me a week of training - this is often why complex FOSS software gets a reputation for being clunky, because alone you will spend ages hunting a GUI button in a complex interface.
TLDR: Go outside, go to makespace or a FREECAD conference - meet other people who use open source software - its much easier to use/learn from others than alone.
Sorry this is a late reply. I can see that mentioning molten salt was a bit left-field, However, it is one of the more realistic ways to store the huge amounts of power needed to fuel an economy for a couple of weeks (which you need in northern europe if you want to use solar/wind). Here’s a link about it:
https://onlinelibrary.wiley.com/doi/10.1002/cite.202000137
I am pro nuclear, but if we are going to descend into this renewable hell, then we need to actually think about how you store terawatt-hours of power. I really think that this kind of storage might be the nearest we have to a solution. we’ll only need it once we try to turn off the gas turbines, of course. It is fascinating that so many smart people don’t see that the whole jigsaw is missing vital pieces.
The fact that you descend into complete science fiction should give you pause for thought. I doubt it will, but please think about how fantastical your proposed solutions are - “a massive lake of molten salt under every city” (I actually like that one!)…
Just a note to say that the very first chat bot, Eliza, created in the 1960’s was a Rogerian therapist. I’m sure I remember a quote that the author was surprised that people opened up to it. I doubt anyone working in AI or chat technology would not know about Eliza so probably not a surprise to the industry… but maybe I am that old. [edits: facts/spelling etc]