Ex: my car's heater doesn't work the moment you turn it on. So if I enter the car one of my first tasks is to turn the blower down to 0 until the motor warms up. A learning language could be used here, given free reign over all the (non-safety-critical) controls, and told that it's job is to minimize the number of "corrections" made by the user. Eventually it's reward would be gained by initializing the fan blower to 0, but it might take 100 cycles to learn this. Rather that train it on a GPU, a language could express the reward and allow it to learn over time, even though it's output would be "wrong" quite often.
That's an esoteric language I'd like to see.