We have a much more connected marketplace. We have had, what I reckon to be an extremely overvalued stock market since 2000. When you have that situation, you are prone to very sudden negative revaluations.

I first heard about Twitter through a journalist friend of mine called India Knight. She said, 'it's fantastic, like a cocktail party where all of your best friends have turned up!'- she was right, it was like that, for about 15 seconds.... It did feel like a lot of people I knew were being really nice and just chatting on this thing... as if Silicon Valley had come up with a digitised, virtual version of a pleasant conversation!

We like to think of data as being objective, but the answers we get are often shaped by the questions we ask. When those questions are biased, the data is, too.

We are wired to be afraid of uncertainty – it automatically hits us as instinctively wrong, like avoid this at all costs.

Taking that first step is your biggest competitive advantage; most people won't do it.