The only difference between prebuilt and DIY is the lack of OS, memory, and storage. The power brick is also an extra $80 for DIY (pretty good deal for a 180W charger). That makes the base prebuilt be +$200 to give you 16GB ram, 512GB ssd, and windows home. That price is good, but if you instead want 32GB and 1TB, the prebuilt price goes way up and you are better off doing DIY. Standard laptop overcharge for upgrades is in effect.

On your settings page you can select what languages you want to see and block everything else.

But most people leave post language unspecified, so you have to include unspecified in your list of accepted languages. That makes the language filtering somewhat useless.

When you select some languages on the settings page. The language selection on the post editor will be restricted to that short list of languages, which makes selecting the language easier.

I was told contaminated hot meant that you couldn’t have a single tap to mix the two safely. That makes washing your hands unpleasant as you can’t adjust the temperature.

A brit I knew was was appalled to find out in the US mixed the hot and cold in the same tap. He was disgusted and figured that made even the cold un drinkable. With US plumbing the hot is mostly safe, just the fact that hot water may leach more minerals from the pipes, or your old water heater might be gunked up. Whereas, in the uk they were actually doing something really bad with the hot, so it had to be stricktly kept separate.

Something special about the way they did the plumbing, I don’t remember

Just ignore it, you’re not missing any functionality. Just some kind of bug.

In the UK they had separate taps for hot and cold because the cold was safe to drink and the hot was not.

Borax tablets. Just hide them around on the floor. Don’t do this if you have loose pets that might eat them.