The end of the article mentions it. Some people are not purely rational decision makers, some people are altruists who know others are not purely rational, etc.

By choosing red you will kill some people.

▲

davebren 6 hours ago | parent | next [-]

Or choosing blue allows them to feel self-righteous while not actually at any risk since this isn't real. Virtue signalling is the ethic of our day.

	▲	jerkstate 5 hours ago \| parent [-]
		Maybe people who choose blue do so because they assume there’s some kind of monkey paw involved in the choosing the red option, like your wife and kids die or something like that

▲

hackable_sand 4 hours ago | parent | prev [-]

Bringing rationalism - or whatever - clouds the discussion.

Blue is purely a win-win for me, so it's rational to only choose blue. Reds have their own value judgement.

"Rationality" is a useless quality to debate here.