Although to many of us who aren't engineers, some of the rules may not be obvious and it may look like an honest oversight - if you know any engineers, they have these rules absolutely drilled into them by the time they've earned a degree.

For someone with no engineering background to make a mistake like this is easy to explain. When someone with an engineering degree does it - they absolutely did know what they were doing is against professional regulations.

David Hilderman is a liar.