I understand the overlap. That's why it's distracting. Throwing in legal regulations that may or may not apply to the ACORN rep is pointless but introduces confusion. Exhibit A: This thread and the resulting threadjack. Actually it's fairly clear to me you don't understand the role of professional engineers. Professional engineers have to consult on and sign off on projects, for instance. Someone makes changes to a schematic, they need to run it by an engineer who can deem it to be safe and sign off for it. There's a substantial amount of ethics and legal responsibility involved. It's not as far removed as you may think it is.