I haven’t read the article but I work with Bloom filters at work sometimes.

Bloom filters basically tell you “this thing might be present” or “this thing is definitely not present”.

If you’re looking for a piece of data in a set of large files, being able to say “this data is definitely not in this file” saves you a bunch of time because you can skip over the file instead of searching through the whole thing just to figure out what you’re looking for isn’t there.

Most shells ignore setuid on scripts for security reasons.