Here again, the National Marriage Standards Bureau has taken the courageous route. It decreed that when celebrities are involved, cohabitation is the same as marriage. So although Tom and Katie are expected to formally marry sometime in the future, they are already married in the eyes of the Bureau.

This means that they already have more than three dog years under their belts. That's an excellent track record by Scientology standards.

I do want to raise one concern about the Bureau's decree that I spotted in the Appendix. It's not clear how one defines cohabitation. When does "sleeping around" evolve into "seeing each other regularly" and then evolve into "cohabitation"? Also, a definition for cohabitation needs to address whether sexual penetration has to occur for it to truly be cohabitation or whether penetration is optional. (This would appear to be particularly relevant in the Cruise-Holmes case, at least based media reports.)