PMI stands for plus/minus/interesting. Edward De Bono developed PMI as an instrument for considering ideas in more detail, thus facilitating decisionmaking. Possible applications also include the evaluation of a project, training course etc.


  1. Put the possible ideas in a table with 4 columns: alternatives, pluses (P), minuses (M) and interesting points (I).
  2. For each alternative first think of all the positive points and benefits and then any possible negative points and disadvantages. Arguments that come to the fore during discussions but are not easy to place under either plusses or minuses should be placed under interesting points. For example, take three minutes for the advantages and three minutes for the disadvantages of each alternative.
  3. Choose the best solution after considering all the points.



Tips and tricks

PMI is also a useful method for the further development of ideas. Establish how the minus points can be eliminated (how can we make a vacation in Norway cheaper?). The interesting aspects allow opportunities to come to light; the so-called “rabbit out of the hat”.

Things can be taken from the interesting aspects which will make the idea interesting in other places.

 Source: ‘Innovation by Creativity’ – Hans Terhurne & Max van Leeuwen