From the article: Lookup tables are always faster than calculation - is that true? I'd think that while in the distant past maybe today due to memory being much slower than CPU the picture is different nowadays. If you're calculating a very expensive function over a small domain so the lookup fits in L1 Cache then I can see it would be faster, but you can do a lot of calculating in the time needed for a single main memory access.
I can't find anything about these low gravity regions (Google redirects me to your post) but they sound interesting. Can you share some reading material?
I checked on my OnePlus 7 and indeed it's possible by default. There is a setting to disable access to the notification (/setting) drawer from the lock screen at least in Oxygen OS though.
This is actually possible. There's Linux tools to extract the WIM files from a Windows installation iso. You have to create the appropriate partition setup (EFI partition with bootloader, NTFS partition with the extracted files), and for configuration of the bootloader I created https://github.com/U1F984/create_bcd/