I was chatting with @Pohners last night about how life would be different with massive theriomorphs and/or if the average human only grew to 6” instead of 6’, then my mind dabbled for a moment on what if humans were 1.8cm instead of 1.8m). I might have to explore this topic further.

Would humans always have been this small (my preferred scenario)? Was it a species-wide reduction to conserve resources? What now would be dangerous? Transportation?