theory

( n.)

   The  consensus,  idea, plan, story, or set of rules that is currently
   being  used  to inform a behavior. This usage is a generalization and
   (deliberate)  abuse  of  the technical meaning. "What's the theory on
   fixing  this  TECO  loss?"  "What's  the  theory  on dinner tonight?"
   ("Chinatown,  I guess.") "What's the current theory on letting lusers
   on  during  the  day?"  "The  theory behind this change is to fix the
   following well-known screw...."

[glossary]