> Is this repeated or one time?

I think it's meant to be one time.

> Seems difficult to guarantee you don't kill a bunch of kids each button press cycle...

Seems extremely easy to guarantee that I don't kill a bunch of kids, just press blue. It's only the red-pressers who might end up murdering kids. By pressing blue the only person I am putting at risk is myself.

If someone has parents and kids themselves should they convince them to press blue as well?