Board Thread:Warhammer 40k General Discussion/@comment-6078851-20140531013206/@comment-69.35.168.117-20140605231128

Diffusion work for plants because they are slow growing. They take a long time to grow a small plant. Orks are humanoid. Humanoid means resembling human, not derived or similar to human. Saying they are plants is saying that a hippo is a bird because a bird picks its teach. The fungi lives on the Ork, and essentially defines the Ork, but the womb is a womb. A womb HAS to get the nutrients into the Ork. You haven't offered a viable solution to the problem. Diffusion simply doesn't work.

Saying that gestation length doesn't affect alien life is like saying that nuclear bonds are different on Eldar worlds. The laws of physics are the same the universe over (or else it would be a different universe). If the nutrients aren't in the pouch they aren't in the pouch. You're saying that either the spores contain more matter than it contains (a paradox), or more matter magically appears. The spore womb needs to bring matter into itself. Diffusion cannot work for a large individual such as an Ork young. It needs some way to bring it in. An umbilical cord (or the equivalent) is necessary because diffusion doesn't work over any distance (it's why we have an extensive circulatory system). It simply doesn't work like that, no matter how much you may wish.

In essence, DIFFUSION CAN'T WORK BECAUSE ORKS AREN'T TERRESTRIAL FUNGI. Terrestrial fungi have a high rate of diffusion because they are fairly uniform and small. If they become too big their extremeties die. That's why diffusion isn't used in non-fungi form. It doesn't travel over distance. It is a set movement, unable to be magically changed like you wish it to be.