Comment 3 for bug 1344179

It was never really designed or discussed about imho - somebody just implemented one approach and we never talked about it much. It helped with Widelands cycles in the ware dependencies.

But I do not think what you say is completely correct. Imho the buildings are implemented something like this:

1) if your output target quantity is not reached, produce if you can.
2) if your output target quantity is reached and it is not reached for your inputs, do not produce.
3) if your output target quantity is reached and the one for your inputs is too, just produce.

I think that 3 might be bad. 1 and 2 make sense to me.