... because I never get tired of asking them, and you re probably tired of reading them... Do colonists possess a trait which determines if they are more likely than not to create stacks? I've seen a colonist build a stack while another doing the same basic work spread the resources across a stockpile. I've also seen a colonist add to a stack in a stockpile. I am guess that only happens when said colonist created the stack in toe first place, or originally placed the first item in that spot in the stockpile.
It seems like the issues are prioritization. With the 40B build I have in fact seen people adding to stacks on a stockpile, but only very, VERY rarely. I'm wondering if it's just such a low priority it essentially never happens.