I don't see the purpose of this. You will add an additional prompt (cost + latency) just to check if the user is on topic. Why? Why do we need to prevent the us

I don't see the purpose of this. You will add an additional prompt (cost + latency) just to check if the user is on topic. Why? Why do we need to prevent the users of the therapy bot from generating poems or code samples? Shouldn't we rather spend our efforts optimizing the intended use case?