Hey, if astrological signs are supposed to result in people that have similar attributes, or personalities, I want to maybe try to test that in some way.
1. have a gathering/meeting where everyone has the same birthday or even within that time on the calendar to fall into their 'sign'
expected outcome: of course people will actually not get along because everyone is different, etc.
harvey outcome: they will all get along.
note: maybe they participate in activities designed to produce conflict.