Examples of ambiguity: elbowing; shoulder checking; tackling.
All of these can be done in ways that are legal, all can be done in ways that are illegal. A ref can err on the side of enforcing everything to the word of the rules (heavy handed) or can err on the side of giving the players some leeway and only calling clearly egregious violations (light touch). If they players are not bitching, why should the ref be heavy handed?
Examples of ambiguity: elbowing; shoulder checking; tackling.
All of these can be done in ways that are legal, all can be done in ways that are illegal. A ref can err on the side of enforcing everything to the word of the rules (heavy handed) or can err on the side of giving the players some leeway and only calling clearly egregious violations (light touch). If they players are not bitching, why should the ref be heavy handed?