There are systems that will use a hidden hyperlink (which only a bot would see and use) which directs them to an infinitely long/wide junk link tree. It means they end up trapped in bot-purgatory and stop crawling the rest of your site.

The issue is that it means you end up consuming resources just to keep the bot trapped.

This is the worst way to go about doing it, because you should never assume a drawing is made to scale unless it is specifically marked as such. A protractor would be useless if the drawing isn’t to scale. Generally speaking, if a problem isn’t drawn to scale, it’s because all of the info you need to solve it is already present in the drawing. You don’t need to bust out the protractor to measure angles, because the angles can either be calculated from the available info, or aren’t needed in the first place.

I personally prefer tools that exist in the fourth dimension. It really makes blind-hole taps a thing of the past.