Words are points in space. Similar words sit nearby. Relationships are directions. Nobody designed any of it; the structure emerged from a model playing the guessing game on enough text.

One refinement remains. A fixed point per word blurs words like "bank" that mean several things, so the position has to be recomputed from the surrounding sentence, every single time. Doing that, letting every word weigh every other word before settling into place, takes a machine built specifically for the job.

That machine is the transformer, and it is the next module.