I found this recording of Professor Daniel Kahneman very interesting. He explains how a Pre Mortem approach can help to avoid tunnel vision and biases in group decision processes.
By asking upfront, at the very begining of the project before all decisions are taken, some situational questions such as « Assume that we have decided to launch this project. We’re a year ahead from Today, our project has been a total disaster. What did happen? », you’re allowing the pessimistic thinking to express itself openly and might discover some new risks and potential or probable errors.
Once you know these exist, you can do something to prevent or manage them…
Thanks to 12manage – The Executive Fast Track for pointing me to this useful video.