no, i don't think i'm "infallible." and like most bike riders, i do rely on "judgement." i've never bulit a "race engine" nor do i ever care to.
i do have several years' experience helping inexperienced folks get rolling on safe bikes, so your advice on the matter is duly noted and disregarded.
thanks for editing your post. feel free to disagree with my posts, but let's not get personal, eh?