Give yourselves a time limit. Around 25 minutes, but experience will show how much time is required. Larger groups may need more time to get everyone's ideas out. Alternatively, give yourself an idea limit.
“At minimum, push for 50 ideas. But 100 ideas is even better ...”
Once the brainstorming starts, participants shout out solutions to the problem while the facilitator writes them down – usually on a white board or flip-chart for all to see. There must be absolutely no criticizing of ideas. No matter how daft, how impossible or how silly an idea is, it must be written down. Laughing is to be encouraged. Criticism is not.
Once your time is up, select the five ideas which you like best. Make sure everyone involved in the brainstorming session is in agreement.
Write down about five criteria for judging which ideas best solve your problem. Criteria should start with the word "should", for example, "it should be cost effective", "it should be legal", "it should be possible to finish before July 15", etc
Give each idea a score of 0 to 5 points depending on how well it meets each criterion. Once all of the ideas have been scored for each criterion, add up the scores.
The idea with the highest score will best solve your problem. But you should keep a record of all of your best ideas and their scores in case your best idea turns out not to be workable.
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