Hawkins: I’ve got it! I’ve got it! The pellet with the poison’s in the vessel with the pestle; the chalice from the palace has the brew that is true! Right?
Griselda: Right. But there’s been a change: they broke the chalice from the palace!
Hawkins: They *broke* the chalice from the palace?
Griselda: And replaced it with a flagon.
Hawkins: A flagon…?
Griselda: With the figure of a dragon.
Hawkins: Flagon with a dragon.
Griselda: Right.
Hawkins: But did you put the pellet with the poison in the vessel with the pestle?
Griselda: No! The pellet with the poison’s in the flagon with the dragon! The vessel with the pestle has the brew that is true!
Hawkins: The pellet with the poison’s in the flagon with the dragon; the vessel with the pestle has the brew that is true.
Griselda: Just remember that.

— The Court Jester

 

Keep it simple.  A plan should be understood by the most stupid person who will be executing it, and they should be able to recite it back to you without prompting.  This “Napoleon’s Corporal” can keep you from failing because you tried to be brilliant.