Is an amazing thing. I've been watching reruns of The Sweeney on ITV4 and as the show has progressed, predicting lines of dialogue that were about to be said.*
Now the thing is if anybody had asked me questions about the Sweeney, I doubt very much if I would have been able to answer them because I hadn't seen the show for many, many years. But the information was still there in the brain, and just needed a key to unlock it.
It's fascinating.
* And not just "You're nicked!" either!