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Contractors, who depend on other trade professionals to get all or a portion of their jobs done, hate being subjected to mumbo jumbo. Of course, pride often prevents the contractor from confessing a lack of fluency in mumbo jumbo. Instead, he or she will defer to the presumed expertise of the trade professional with nods of the head and the occasional, “I see,” cementing the relationship of trust and ignorance. Reasonable and intelligent questions are addressed with reasonable and intelligent replies, but in a foreign language. The Heat of the Moment If there were more books like How Come? Hydronic Heating Questions We’ve Been Asking For More Than 100 Years (with straight