Tenth Man: Do you have a Advocatus Diaboli in your business? (Your Black Swan hunter)


How Israeli intelligence failures led to a ‘devil’s advocate’ role

The Tenth Man is a devil’s advocate. If there are 10 people in a room and nine agree, the role of the tenth is to disagree and point out flaws in whatever decision the group has reached.

Plan More Effectively with the “Tenth Man Rule”

When it comes to planning, you want to have every aspect covered as best you can. The “tenth man rule” always has someone play the part of contrarian no matter how solid your plan looks to make it even more effective.


Devil’s Advocate- wikipedia

The Advocatus Diaboli (Latin for Devil’s Advocate) is the popular name for a former official position within the Catholic Church, the Promoter of the Faith: one who “argued against the canonization (sainthood) of a candidate in order to uncover any character flaws or misrepresentation of the evidence favoring canonization”.[1]


In the United States, historically this is the posistion usually played by the Press versus the US Government

As you can plainly see, they were co-opted years ago (if not decades) for different purposes

Keep this in mind when having this function

Those in power do NOT like being challenged

This position will be a threat to the Climbers in your organization. You will be able to observe the attempted Co-opting of it if you use it.



Where does this fit into you business?

That is your job to decide

Usually it would be best for a basic part to have them in a brainstorming

(Your level as a leader will affect this.. If you are internally weak in your head it will be magnified)

I would say put them also on the Review team

And yes it is there job to be contrary and find errors

Things you dismiss it is their job to think are true and find the contrary evidence and formulate plans


Some of you think this is BS



The Black Swan: The Impact of the Highly Improbable

The Black Swan: The Impact of the Highly Improbable is a 2007 book by author and former options trader Nassim Nicholas Taleb. The book focuses on the extreme impact of rare and unpredictable outlier events — and the human tendency to find simplistic explanations for these events, retrospectively. Taleb calls this the Black Swan theory.

The book covers subjects relating to knowledge, aesthetics, as well as ways of life, and uses elements of fiction and anecdotes from the author’s life to elaborate his theories. The book spent 36 weeks on the New York Times best-seller list.[1]

The book is part of Taleb’s five volume series, titled the Incerto[2] including Fooled by Randomness (2001), The Black Swan (2007–2010), The Bed of Procrustes (2010–2016), Antifragile (2012), and Skin in the Game (2018).




Examples where a tenth man/ Advocatus Diaboli would have been a life saver

Enron – exclusive talent above all would have been trashed

Bernie Madoff- tenth man would have said NO

Hillary Clinton Campaign- Bill would not have been ignored, leaving the abandoned states to be lost

SCANDAL- wikipedia

A scandal can be broadly defined as an accusation or accusations that receive wide exposure. Generally there is a negative effect on the credibility of the person or organisation involved. Society is scandalised when it is made aware of blatant breaches of moral norms or legal requirements. In contemporary times, exposure is often made by mass media. Such breaches have typically erupted from greed, lust or the abuse of power. Scandals may be regarded as political, sexual, moral, literary or artistic but often spread from one realm into another. The basis of a scandal may be factual or false, or a combination of both.[1]


In closing, do you see the promise land here?

So if you are the business person take a moment..


Now look at the failures of the scandals and other examples


I leave you with a question you will (might.. lol) NOT like

(you have to be able to catch you emotions before they catch you)

Should anyone be kicked from all social media

or do they perform a function?

With the above information now in your possession


Now.. See the problems you face



My Wife ‘suggested’ I add a better worded conclusion

Simply put

Do you have an Advocatus Diaboli in your business

I covered the idea of the Tenth man and the Devils advocate

I added in What a black swan was

The scandals and losses justify the point of needing one


It comes down to you and how you do things

some follow up






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