To blue or not to blue?

Then you’re no longer dealing with the same problem. It matters that everyone is fully aware of the situation, the rules, and are given a choice.

These are two different ethical situations:

  1. There are 100 people. 50 of them are asked to push either a red button or a blue button. Anyone who pushes the red button receives the vaccine. Anyone who pushes the blue button receives the vaccine only if 26+ push the blue button. Those who weren’t asked to push the button receive the vaccine only if 26+ push the blue button.
  2. There are 100 people. All of them are asked to push either a red button or a blue button. Anyone who pushes the red button receives the vaccine. Anyone who pushes the blue button receives the vaccine only if 51+ push the blue button.

There’s a good reason to push the blue button in scenario 1 (to save those who aren’t asked to push a button), but everyone should push the red button in scenario 2.