Johari Windows: No Cleaning Needed

"Johari Window"
noogenesis.com/game_theory

"The Johari Window, named after the first names of its inventors, Joseph Luft and Harry Ingham, is one of the most useful models describing the process of human interaction. A four paned 'window,' as illustrated above, divides personal awareness into four different types, as represented by its four quadrants: open, hidden, blind, and unknown. The lines dividing the four panes are like window shades, which can move as an interaction progresses...."

I learned about the Johari Window this evening, following up on a link provided by crpitt (Twitter), the first of these for-fun Johari pages:

• Self-Disclosure Quiz
  abacon.com
• Interactive Johari Window
  Kevan.org

'Learn something new every day' - pretty good mental-health advice, and fun to boot.