Why are you wondering?

It comes from the Latin word ingenium.

In Germany engineer is a regulated term. Computer scientists wanting to call themselves engineer or software engineer need to complete certain higher education programs. A B.Sc. program in CS is enough for example.

ZFS is unfortunately not in the upstream Linux Kernel :/

Btrfs is worse in many aspects but I like its flexibility of adding drives with different capacities over time.

Shit, I’ve a house?! Where have you been all my life? /s