Ari Enna-Branse is at work, or possibly at play, teaching a dozen children experimental design in the school chemistry lab, and her husband is out of town at a conference.
"Want to find out?"
"Find out yes!!"
Caaaaarefully smoothly sitting down on a bench. Mental note to bring the box of blankets down next time.
And after a little less than twenty minutes she's up again and harvesting the second rock.
It produces a different-looking pebble. "Merge no," she concludes.
"Huh, okay." What's a good next thing to try out of all the things she wants to try? Putting a little dab of paint on a rock to see if its 'products' are mergeable from before and after should wait until they have at least three from that rock already so as not to waste effort. Checking two maple seeds from the same tree is a good idea but also a bit labor intensive . . .
Okay, the idea she's just had is going to bug her until she checks. Probably the answer is no and there isn't anything to worry about.
"Could you make-from that bird, if you wanted to?"
"Make-from bird no!"
"Good." So she almost certainly can't make-from people either and that can of worms can just stay closed. "What do you want to do next? More words? Make more things?"
"More make-from rock," she decides. "Find out merge rock."
Once they've accumulated three rocks, Ari offers them all to Petal and points out a flat bit of dirt she could merge them on, then watches eagerly.