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Negative Feedback

Thermostats are simple devices.  They are simple on/off switches that work off temperature.  The room gets cold, the thermostat gets cold, the switch comes on, the heat comes on.  After a time, the room gets warm, the thermostat gets warm, the switch goes off, the heat goes off.  Repeat.  This is a simple process scientists and engineers refer to as negative feedback.

So, when it is too warm in a room, why do people forget how this simple process works?  The room is very warm, the thermometer on the thermostat says it is 75, the thermostat is set for 68, yet someone invariably comes over and turns the thermostat down even more.  Multiple times.  Why?  It is off!  It cannot be any more off.

These are not imbeciles, these are adults of at least average intelligence who have probably been using thermostats their whole life.  Just don’t get it.


Categories: Pet Peeves
  1. Me
    March 23, 2012 at 9:45 PM

    Gee I wonder which imbeciles, err adults of average intelligence you are referring to?

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