Ok, if you want to compare an enclosed ignition system to expanding vapors pouring down the side of a bike and static electricity and hot pipes and engine, ok, I get paid whether you die or not, makes no difference to me. Like you said, what do I care, job security. Only takes once, like Ebola, only takes once. BTW, every law, every safety procedure, every policy, every ordinance ever made, passed, voted on or enacted is aimed at the lowest common denominator, you know that, so when you talk about all the things you make sure you do in the form of safety because you know what to do or how to do it, doesn't mean everyone will do it that way or even do it anyway. I wouldn't put a residential sprinkler system in your house to protect firefighters, unless your house is the size of a commercial warehouse and contains millions of dollars of items and is multi level. Spend the money on stick construction as opposed to trusses.