Who’s heard of this? It’s a great tool for self-awareness. The ‘unknown’ is the hardest box to fill (it’s impossible) but I find it a good moment for reflection. What was once unknown to you and others? When it became known to you, which box did it go into?
I once didn’t know how I would manage high stress, potentially catastrophic situations. I then was first on scene to a 3 vehicle RTC on a motorway and I learnt that I do really well at managing people and the situation under high stress. It then became part of my ‘open area’ (to some) and my ‘hidden area’. When did you discover something that had been part of your ‘unknown’.