Everyone with OCD knows the sequence. What if I did it. All right, you didn’t. But what if you did and do not remember. Fine, you would remember. But what if the not remembering is the point. And so on, forever, each answer generating the next question.
This isn’t a failure of your reasoning and it isn’t that you’re unusually clever at finding holes. It is a structural feature of the game, and it’s worth understanding because it’s the clearest argument for why ERP works the way it does.
Why it never terminates
Because certainty about the future, about the contents of your own mind, or about a past event isn’t actually available to anyone. Not to you, not to a therapist, not to a test. Ordinary people live with that permanently and don’t notice, because the question never gets asked at a volume that demands an answer.
So when you set out to answer a what-if, you’ve set yourself a task with no completion condition. Any answer can be met with a further doubt, because doubt is cheap and certainty is impossible. The engine doesn’t run out of fuel; it runs on the absence of fuel.
What each round costs
Every attempt to answer teaches your brain two things. That the question was important enough to require answering. And that you can’t bear not knowing. Both make the next arrival louder, which is why the engine speeds up over years rather than wearing itself out.
The exit isn’t an answer
This is the counterintuitive part and the whole of the treatment. You don’t get out by finding the reply that finally holds. You get out by declining to play — by letting the question stand unanswered and carrying on with what you were doing.
In practice that means: notice the what-if, don’t engage with the content, drop the analysis mid-sentence, and return your attention outward without checking whether the anxiety has gone down. The checking is another round.
Clinicians often teach an agreeing move rather than an arguing one: “maybe, and I am not going to work it out.” Not sarcastically and not as a magic phrase — as a genuine refusal to enter. Arguing keeps you in the game; agreeing with the uncertainty ends the round.
What actually changes
Not that the what-ifs stop arriving. They arrive less, eventually, but they don’t disappear — intrusive thoughts are ordinary equipment and everyone has them.
What changes is that they stop demanding anything. The question turns up, and nothing happens next, and it goes. Which is what the treatment is aiming at, and it’s a better outcome than the certainty you were originally looking for.