As someone else pointed out, tax laws are public (like all laws) and we don't specifically think it's worthwhile keeping them secret to avoid gaming the system.

As someone else pointed out, tax laws are public (like all laws) and we don't specifically think it's worthwhile keeping them secret to avoid gaming the system. So I don't buy that argument off hand. Plus people are already gaming the system, it's just the knowledge to do so is imperfect and unfairly distributed. Leveling the playing field there puts more focus on making the algorithm less vulnerable in the first place instead of effectively relying on security through obscurity.