[Sir_Dr_D]

The amount of blood slaves that you make on a particual turn, cannot make that much difference to the game as a whole. If one of your blood income provinces gets invaded, you have bigger concerns then just the slaves that would have been lost that turn. Coding the game so that it remebers where and and how many blood slaves were generated that turn, and then deposting them in the lab at the end of the turn would be harder to implement. It is far easier to just have the slaves be deposited into the lab to begin with.