According to an article in The Times years ago (early 2000s?) the money was used notes from the Bank of England that was going to be burned anyway. With insurance, security, and a BoE employee to supervise it was expensive, but not a million pounds expensive. That said, I could imagine the KLF inventing this story too, so I don't know what the truth is.
On your second point the History menu has a Restore Last Session option (or something like that) when you reopen the browser after inadvertently closing a bunch of tabs.
Scientifically speaking, the human death rate is a surprisingly low 93%. This is the obvious calculation: the number of people who died divided by the number who were born.
My understanding from the book was that CO2 is an essential part of the mechanism that transfers oxygen to your muscles. If you breathe too much you have too little CO2, your muscles can't get enough oxygen and they don't work efficiently. I've no idea if this is true, but since I read the book I breathe less when exercising and it seems to help. Edited to add: I'd forgotten, when I first started breathing less during exercise it made a huge difference, like coming down from altitude. I recommend it.
Many years ago I wrote a C compiler in assembly language. It wasn't hard, and C hasn't changed that much. The complexity in modern compilers is in the optimisation, which you don't need if you're bootstrapping. It's not impossible.
An example in the UK yesterday. Climate protesters glued themselves to a petrol tanker and were charged with tampering with a motor vehicle. The protesters argued that the bit with the petrol was a trailer, not a motor vehicle. The judge agreed and acquitted them. https://www.bbc.com/news/uk-england-london-64403074
You can bootstrap the compiler. It's a chore but not impossible. More usefully, you can check that your builds are identical to other people's, so at least your compiler isn't uniquely compromised.
The whole point of pronouns is to reduce cognitive overhead. If pronouns become something you have to remember for each person then you might as well drop them from the language and use names all the time.
The design choices make a bit of a difference but most of the overhead is Defender. When you try to read thousands of files your computer spends most of its time running Defender. Turn it off and the problem goes away.
ddrescue works with blocks and bytes. Audio cds are different. They contain a single physical bit stream interpreted as several interleaved logical bit streams representing e.g. audio, position, metadata, error correction. They are not a sequence of bytes. Cdroms and dvds put a block and byte abstraction on top of this so ddrescue can do something with them.
An automatic driving ban for passing under (being generous) the second red cross on a lane would weed out the arseholes. Just enforcing the existing law would help. The cameras and anpr are in place so it should be cheap to implement. But whenever such a thing is suggested motorists claim it's a conspiracy to empty their pockets.
I attended a prestigious university. You could pretty much do what you liked (including nothing) for the three years and the degree was awarded for 30 hours of exams in a single week. In the exam room you couldn't copy work or pay someone else to do it or consult a chatbot. You knew the subject or you didn't. So you don't have to change the teaching. You could change the examining.
Gas stoves might be constantly leaking, but they only produce particulates when they are alight. Assuming you don't have an ancient appliance with a pilot light.