Back in the 80s; I â€œpartiedâ€ about 6 nights a week and drank heavilyâ€¦ and droveâ€¦ and rodeâ€¦. Disgracefully. I got nabbed for .05 BAC a string of times. Fortunately I did not have any collisions that injured or killed anybody. Somehow the gods of mathematical probability did not get me fairly in their sightsâ€¦. The cops did though, and booked me for .05â€¦ a string of times. Rightfully so too. Ironically I had stopped drinking almost completely by the time the whole mess was dealt with by the court; (1991 if my memory serves correctly). My license was cancelled for 4 years. Anyway the point of this paragraph is that after the 4 years had elapsed one of the things I had to do to get my license back was to attend a drink driver education program. It was conducted by a registered nurse. She told the â€œclassâ€ .05 meant your blood was .05% alcohol. Previously she had told us how many standard drinks it took to put you on the limit; which I had diligently made notes about. I did the math, and the math revealed that if her information was true I would need 80 liters of blood in my vascular systemâ€¦ which is of course false. I bought this to the instructors attention, she abused me and told me that she was a professional etc etc etc and I had no right to tell her she was at error. So I contacted the department of health to get the facts. At the time they were responsible for setting the BAC limit for drivers. If I remember correctly .05 means: .05 grams of alcohol to 100 milliliters of blood. I assume that the reason alcohol content is compared as a mass is because alcohols coefficient of thermal expansion is high, ie. a volumetric measurement of alcohol would contain a different mass depending on temperature giving large varying results. The bottom line here is that the instructor was misinforming or perhaps disinforming the class. She was demonstrably incompetent. A long time ago I asked a motorcycle mechanic; â€œwhy does the crankshaft turn twice when the cam shaft only turns once if an engine is a four stroke?â€ He thought for a moment or two and replied; â€œCheaper to make it that wayâ€. Last night I asked a mechanic the same question. He replied; â€œThe cam has nothing to do with the four strokesâ€¦. I will not mention names to protect the guiltyâ€¦. Demonstrably incompetent. Last week I went to Sunshine court to contest a speeding fine â€¦. 6kmh over the limit in a 100k zone. The magistrate asked why I was contesting the fine. I explained a technicality of the RADAR detection system and how it overestimated my speed. In response the magistrate replied, there was no RADAR involved; the detection system operated by sensors under the road, she said. The traffic infringement notice, as well as the summons I received about the matter stated that my speed was detected by a Gatso Parabolic RADAR!!! again Demonstrable incompetence. By now dear reader, you have detected a pattern. This is just the tip of the iceberg. These people and thousands like them are all gainfully employed and drawing in some case very large salaries indeed. It is a chronic and acute fact; Incompetence is considered a virtue. One of these days Iâ€™m gunna have a major dummy spit and get with the program and be very virtuous indeed! Bugz.