@flowingdata.com ought not to characterize keeping one's money under a mattress as having "favourable odds [of a positive return]". On the contrary, one is virtually certain to lose money, in real terms, by doing this.
flowingdata.com/2026/05/14/m...
flowingdata.com
For the Washington Post, Jeremy B. Merrill and Leslie Shapiro visualized users who won and lost money on Polymarket. The odds aren’t great. A lot of users aren’t that good at predicting…
