[MW Giles]

If you collect serial numbers of the aircraft you bring down then statistically you can use them to estimate the production of your enemy.

A blackout block or two is going to mean that you overestimate enemy production by a few %. Will you win or lose as a result, probably not.

But with no real effort those little blocks of nothing sow a bit of confusion on the other side. What is not to like?

Germany started to do the same thing later in the war: imitation is the sincerest form of flattery

Martin