If you were to walk into a 78 degree house, would that be warm or cool to you?  Well, it depends.  If you’re in Duluth, Minnesota, in January, walking into a 78 degree house would be ridiculously warm, even hot.  But if you’re in Houston, Texas, in a steamy heat wave in August, 78 degrees will feel luxuriously cool.  So what changed?  The inside temperature is the same in both cases.  So how can a constant feel hot in one situation and cool in another?  It’s because the exterior circumstances have changed.  The context colors the constant.

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