The obvious but mediocre way to assign credit in the Newton-Leibniz case would be to give them each half credit.
The better but complicated version of that would be to estimate how many people would have counterfactually figured out calculus (within some timeframe) and then divide credit by that number. Which would still potentially give a fair bit of credit to Newton and Leibniz, since calculus was very impactful.
That sounds sensible, though admittedly complicated.
This is obviously the correct way to interpret what’s happening.
At some point the per person Shapley value becomes small but I’d guess that the shapely impact of Newton & Leibniz is substantial for quite a long time.
The obvious but mediocre way to assign credit in the Newton-Leibniz case would be to give them each half credit.
The better but complicated version of that would be to estimate how many people would have counterfactually figured out calculus (within some timeframe) and then divide credit by that number. Which would still potentially give a fair bit of credit to Newton and Leibniz, since calculus was very impactful.
That sounds sensible, though admittedly complicated.
This is obviously the correct way to interpret what’s happening. At some point the per person Shapley value becomes small but I’d guess that the shapely impact of Newton & Leibniz is substantial for quite a long time.