[araes]

Because then the bot can hide its activity like the Facebook pixel, where it's visibly difficult for human users to detect (while being relatively easy for computers and scripts to detect).

A lot of security is very similar. A camera in the business that is visibly difficult to detect, yet can easily observe movement within the business.

Its also one of the main areas in online interaction lately. Anything that marks an actor as "not a human".

The security arms race has escalated a lot lately, since now bots can write comparably well and pull a fake image to pass face / camera checks, or similar security. You can't do "find the motorcycle" cause now the bots are better than the humans in many cases. The text recognition failed a long time ago, because it quickly devolved into image tests that humans are not actually that great at.

Unfortunately, the entire problem (in my opinion), is trying to secure a realm for human use, that humans are not native to. Computers are better at being computers.