I had this really awesome idea. Imagine computer tech from an alien world that doesn't run on algorithms and code, but a combination of gemstones inlaid in the wall, various sizes, shapes, and geological makeups.
Instead of programmers, you have "jewellers" who set the stones in the wall and cut them into the right shapes for the "program".
Instead of programmers, you have "jewellers" who set the stones in the wall and cut them into the right shapes for the "program".