Automatic ballista control.

Then explain to me why not write a program that does everything for you: collects resources and builds castles? This doesn't ruin the game's structure.

I'll answer too. The point is that you can write any program. The question is, WHY? If a program that builds buildings and collects resources for you saves a maximum of 10 seconds, then this program can save hours! This program can be used not only with ballistae; its application is limitless!

And I'll add one more thing. Before allowing the use of this program, there was a discussion among competent people and respected players, and they decided that the program could be allowed. So, it was allowed, meaning it wasn't done without reason.