It is said that you can put a frog in a pot of water and put it on the stove to boil. The frog will die without moving not knowing that he can jump out and not realizing the water is hot until it is too late. That might be a metaphor for the HVAC service industry. The independent contractor is the frog in the pot of water and the stove is on. Microprocessors revolutionized our industry. The falling cost and increasing reliability of micro and power electronics caused them to be used throughout our industry in controls, speed controls, solid state motor starters and a myriad of other functions. This evolution, however, was not a disruptive technology (unless you made pneumatic controls) that changed the way we operate and control systems. Microprocessors did not greatly affect who did what or how and when it was done.
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