evidence: It was a great example of the power of assumptions (things that are accepted as being true without proof) and how sometimes they can lead one’s thinking astray. Assumptions are important. We need to be able to rely on them to function. For example, that it is safe to sit on this chair. That the other car will stop at a red light. That if you pay for an item on line it will arrive. Without being able to trust our assumptions, we would need to test every single event before proceeding! [...] Assumptions are so powerful and central to our way of thinking that if you change an assumption you can change your whole perspective on a subject — unlocking new thinking and ideas.