The research behind splitting bills
We read the academic papers on splitting bills and shared money so you don't have to. What actually holds up, and what it means for the next time you're staring at a check trying to work out who owes what.
Why the group always over-orders
A field experiment found people spend about a third more when the bill is split evenly. Why it happens, and when the even split is still fair.
The math behind “simplify debts”
Any group settles in at most n−1 payments. The true fewest transfers is NP-hard, and it never matters for a real dinner. Here's why.
One good default beats ten options
A fair-division site ships one algorithm per problem, on purpose. And people can feel the difference between a technically fair split and a good one.
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