On [this medium post](https://medium.com/@nicolasdorier/hf-and-sf-for-libertarians-1c8d4b68372d#.la65bgj4h), I maintained the following:

• A soft fork can't violate the Non Aggression Principle (NAP)
• A hard fork does not either, but service provider might violate it if not being careful by switching chain without your consent

On twitter piotr seemed to disagree, given the 140 limits I want to better discuss it here.