This document outlines an activity for a first year seminar course that involves critical thinking. Students are presented with a scenario where 13 people are left on Earth after a virus wipes out the population. They must take shelter in a bunker but there is only enough resources for 4 people. Students must decide which 4 individuals from a list should stay in the bunker and survive, and they must justify their choices. The activity aims to promote discussion of controversial topics and integrate different domains of critical thinking.