Webster believes that there are both cognitive and physical limitations in children that make it more difficult for children to understand and apply rules they are taught from a young age. "A very common view of gun-owning parents is that what gun safety is all about is teaching your children rules," he said. "What they don't consider are the developmental issues and physical abilities of children to actually follow these instructions. It was obvious to me when I saw this nine-year-old girl holding an incredibly powerful gun like an Uzi. Why anyone was surprised when she couldn't handle the recoil is beyond me."