Related:

• heory 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....
• In theory, theory is the same as reality. In reality it's not.
• If the data doesn't fit the theory, fix the data.
• Einstein rules relatively OK - in theory anyway.
• In theory, there is no difference between theory and practice. In practice, there is.
• In theory, there is no difference between theory and practice. In practice, however, there is.
• In theory there is nothing to hinder our following what we are taugh
  but in life there are many things to draw us aside....
• Marge: I really think this is a bad idea. Homer: Marge, I agree with you -- in theory.
  In theory, communism works. In theory....
• canonical adj. [very common; historically, `according to religious law'] The usual or standard state or manner of something.
  This word has a somewhat more technical meaning in mathematics....