Bullshit, they are prediction engines biased from their input. Saying that no one understands what they do is a gross simplification. Do you understand how encoders work? Great! Then there is a common vocabulay! Now we move on to a probability matrix given those inputs, and we get the out put token witch circles through the input layer.

Tell me you have no idea what you are doing, without telling me you have no idea what you are doing.