The first time I recall using the inversion strategy was during my interview with McKinsey.

I remember a Senior Engagement Manager called Saimond putting me through my paces around a case and then posing a leading observation.

“So, you have given me some great demand side ideas there …”

As someone with a kindergarten teaching and then communication background I had not used economic concepts much. But thankfully I had helped review my university boyfriend's economics essays and twigged that he wanted more and different ideas from me.

So, I responded that he was right, and that perhaps he would like some supply side ideas too?

I then invented some on the spot. Using opposites has turned out to be a useful thinking strategy in many situations since.

It is also another model discussed in Shane Parrish's new book The Great Mental Models   which I posted about last week.

Given Clarity First members have asked me to pick my way through Shane's models in bite-sized stages, I am extending my series of posts on this book. Unsurprisingly, today's focus is on opposites, or as Shane Parrish calls them ‘inversions'.

Choosing Options: One natural place to use this strategy is when choosing a set of options to evaluate. He offers two strategies to help you use inversions:

  1. Start by assuming that what you are trying to prove is either true or false, then show what else would have to be true
  2. Instead of aiming directly for your goal, think deeply about what you want to avoid and then see what options are left over

Checking our ideas are MECE: We can also use inversions in other ways when we are identifying whether we have a complete – MECE – set of ideas in our communication.

Clarity First members received a deeper email on this topic with a list of ways they can use inversions to strengthen their communication.

The waitlist for the program starting in late February 2021 will open soon.
Watch out for my email as I will be limiting the number of places available and ‘Waitlisters' will get the first opportunity to join.

Our communication is only as good as the ideas that underpin it.

I hope that helps.



PS – Related posts include:

From this series …
1. A fabulous thinking tool to help you solve problems and communicate
2. Further thinking tools

Past posts on thinking skills …


PPS – I receive a small commission if you click the link and decide to purchase a copy of Shane's book from Amazon. 



Davina has helped smart people all over the world clarify and communicate complex ideas for 20+ years.

She began this work when she joined McKinsey & Company as a communication specialist in Hong Kong where she helped others use the Minto Pyramid Principle.

She continued helping others when living in New York, Tokyo and now back in Australia where she was approved by Barbara Minto herself to teach Pyramid.

Her clients include experts across many disciplines across Australia, Asia Pacific, New Zealand, the UK and the US. She currently coaches a number of C-suite executives as well as many mid-level folk and the occasional graduate.

Get her 4 Tips for Communicating Complex Ideas here.