When you have an idea you tend to naturally defend it even if it sucks. Worst, some people don't ever admit a tiny possibility that they just might be wrong.
Can you Be Wrong?
When you have an idea or new system or a business structure or a market niche or a model or a paradigm and you want to make a point, try this, ask yourself why? then answer.
Ask yourself again why? Then answer.
Ask up to 6 whys. And answer each time. You'll feel much better while presenting your idea.
That's a tip I learned from the PresentationZen book.
-Posted from my E71 Nokia