Analagous to what exactly?

Medical imaging often involves the solution of mathematical inverse problems. This means that cause (the properties of living tissue) is inferred from effect (the observed signal).

Blimey, I thought that was what I had been studying history for back at Cambridge. You start off with events, a war say, and then work backwards to the cause. And now you tell me that’s about inverse maths! If only I had known at the time..