Another similar example is jurisdictions that switched to assuming an individual consents to organs donation when they die, rather than having an opt-in system,

Another similar example is jurisdictions that switched to assuming an individual consents to organs donation when they die, rather than having an opt-in system, see much higher rates of organ donation. https://sparq.stanford.edu/solutions/opt-out-policies-increase-organ-donation https://sparq.stanford.edu/solutions/opt-out-policies-increa...