"In a study published in Nature Communications, the researchers reveal an elegant molecular mechanism that acts like a GPS coordinate system for regenerating cells… the puzzle was how the cells in the regenerating limb-stump controlled their levels so precisely to know exactly where they were on the axis from shoulder to hand.”
The Nature paper:
Compared to no arm for the rest of my life, being called “baby-hand” for a year seems like a small price to pay.
True. It would probably be funny.