While the reason he thought of it is stupid, he does raise an interesting point. Even today, we are beginning to engineer unicellular organisms. A society advanced enough to have FTL travel should be able to, at least, engineer a basic disease. Biowarfare would be a very possible option in the scifi setting of FutureCraft. It goes without saying that such a society would likely be able to engineer super soldiers. (no I am NOT talking about giant green men!)