Add a new rule to the ruleset, entitled Polarity:

Each Scientist has a Polarity, which is an integer between -50 and 50, and is tracked on the Scientists page of the wiki. While there is no Portal open, this value defaults to zero; while there is a Portal open, the default to this value should be determined through a DICE2 roll, with a value of 1 corresponding to a Polarity of -50 and a value of 2 corresponding to a Polarity of 50.

Any Scientist with a Polarity that is negative is considered to be Prime-Oriented, while any Scientist with a Polarity that is positive is considered to be Alpha-Oriented. Any Scientist with a Polarity of zero is considered to be Balanced.

Shifting a Scientist’s Polarity in a negative direction can be referred to as shifting it Primeward, and shifting a Scientist’s Polarity in a positive direction can be referred to as shifting it Alphaward.