I was curious if "shake"ing an empty pouch would create elements out of thin air (is Ur air thin?), or pehaps out of some residue of the former contents. (ETA, I do have that upgrade)
I found an empty discarded pouch on the street, I shook it, I got the message (paraphrasing here)
Your pouch is too full to create new elements.
That certainly was not the case.
well, I won't do that again.