There is an awful lot of case law focusing on the significance of a comma, or trying to figure out whether a term modified only the immediately subsenquent term, or an entire list. Litigating over that type of issue is a frustration and, frankly, wastes everybody's time and money. And at the end of the day, it would be entirely avoidable if legislators exercised a bit more care when drafting laws. Not all ambiguities or errors can be eliminated, but a great many can.