Déformation Professionnelle

The French term for the tendency to view the world through the narrow lens of one's professional training—a more elegant and precise version of Maslow's Hammer applied specifically to professional expertise. Lawyers see legal problems everywhere. Engineers see technical problems everywhere. Therapists see psychological problems everywhere. The 'deformation' isn't that the professional is wrong about what they see—it's that their professional lens makes certain features hyper-visible while making others invisible. The deformation is IN the profession: the training that creates expertise simultaneously creates blindness.

When to use it

When professional teams keep solving problems the same way; when cross-functional collaboration would reveal dimensions invisible to any single profession; when career-long expertise may be creating blind spots; when organizational decisions need perspectives from multiple professional lenses.

How it can help

Regularly consult people with different professional deformations than your own—not because your perspective is wrong but because it's incomplete. The practice: for any important decision, ensure that at least one evaluator has a fundamentally different professional lens. A business decision reviewed only by business people will miss what an engineer sees. A technical decision reviewed only by engineers will miss what a designer sees. The meta-practice: name your own déformation professionnelle explicitly ('as a [profession], I'm probably over-weighting [X] and under-weighting [Y]').