Yes, when the provisions set out a long list of elements, the choice that Parliament has to make is always a risky one. Do you prefer to define almost everything that you want to cover in a concept that you are trying to establish, or do you want to leave something else aside? That risk, which is political more than it is legal, must be assessed at the time the act is drafted. The risk will never go away.
On April 16th, 2013. See this statement in context.