Professor Bernd Rohrbach first revealed his innovative method in 1968.
He needed:
– Six people
– A question or problem
– A five-minute timer
Each person is given five minutes to write three answers to the problem.
After five minutes, each person passes their worksheet clockwise. After five more five-minute rounds, you’re done.
Every five minutes the team produces 18 ideas, bringing the final tally to 108 in just 30 minutes.
But there’s one big problem with professor Rohrbach’s method: everyone had to be in the same room.