This reminds me a bit of the concept of lottery savings accounts, in which principals are untouched and winners receive interest: it turns the common human desi

This reminds me a bit of the concept of lottery savings accounts, in which principals are untouched and winners receive interest: it turns the common human desire to gamble towards good, rather than evil. I like it, too, because it just seems fairer than an annuity: there's an upside as well as a downside.