

This article is an excerpt from the Shortform summary of "The 48 Laws of Power" by Robert Greene. Shortform has the world's best summaries of books you should be reading.
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Overview of Law #17: Keep Others in Suspense: Cultivate an Air of Unpredictability
Because people crave predictability and a sense of control, you can throw others off balance and even terrify them by cultivating an air of unpredictability. While your opponents are stressing themselves out by trying the explain and anticipate what you’re doing, you can achieve your objectives almost unnoticed.
Principles of Law 17
Unpredictable, sudden events like tornadoes and flash floods terrify people, leaving them in fear of the next one. According to Law 17 of the 48 Laws of Power, you can have a similar effect on people by cultivating an air of unpredictability.
We want other people to be predictable, and we ourselves follow patterns and routines, out of laziness, a preference for comfort, or a desire to keep the peace. Animals follow patterns as well, which allows us to hunt them successfully.
But unpredictability is an important tool for wielding power — by suddenly doing something no one expected you create fear and confusion, which keeps others off balance, allowing you room to maneuver. It may also prompt them to make mistakes.
You can use this tactic effectively even if you are the underdog. For instance, during the Civil War General Stonewall Jackson confused and stymied the much larger Union forces that were marching on Richmond, by repeatedly moving north and then back south again. In response, Union General George McClellan slowed his forces, while trying to figure out what was going on, which gave the South time to reinforce Richmond. This turned certain defeat into a draw. General Jackson avoided outright defeat by following Law 17: Keep Others in Suspense: Cultivate an Air of Unpredictability.
Jackson used this tactic repeatedly with great success. When you’re outgunned, be unpredictable. Or use the tactic in more typical day-to-day situations — you’ll intimidate people and keep them on the defensive with random, inexplicable acts.
Besides unsettling people, you’ll draw attention and get people talking, as they try to understand your motives. When you cultivate an air of unpredictability, you generate not only fear but also respect.
Putting Law 17 to Work
Here’s an example of how to apply Law 17 of the 48 Laws of Power: In 1972 chess great Bobby Fischer so unnerved Russian champion Boris Spassky with unpredictability, that Spassky had a meltdown and left without completing the match in Reykjavik, Iceland.
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