Wednesday 17 October 2012, 11:00
Chance, risk, uncertainty, luck - call it what you will - affects every part of our lives.
And so when BBC Four commissioned our programme Tails You Win: The Science Of Chance there was a huge range of possible themes to explore, from gambling to natural disasters, extreme sports to collapsing economies, coincidences to lotteries.
We ended up touching on all of these since they all, at least to some extent, can be handled using numbers.
Of course people's feelings about chance and risk are vital, as my guts told me when I was waiting to do a skydive.
The programme shows how we try and answer that question, although the producers would not let me use all the equations. Meanies.
But they did let me talk about the fundamental ideas of chance itself. Does it exist as part of the external world? Or is it just a way of saying we don't know - our personal ignorance?
These are wonderfully tricky questions that a seven-year-old can ask and the biggest brains can't agree on.
My personal tendency is towards the 'ignorance' interpretation and I certainly believe that any probabilities we put on future events are a product of our judgment and don't really exist 'out there'.
But in the end all these fancy ideas don't make much difference, we still need to decide whether to spend our pension lump-sum on a huge motorbike or save it for our old age, go for a jog or slump on the sofa, buy a premium bond or a lottery ticket.
As the programme shows I love trying to compare the risks of different choices and so, for example, the theory of gambling fascinates me.
What affects our chances of living to 100?
But in practice I don't get a huge thrill from actually risking my money and I know I would lose in the long run, and so my online betting account is kept for academic demonstrations only (honest).
The programme is not intended to make people more cautious or more risk-taking, but maybe to ask 'what are the chances?' and try to get an answer.
David Spiegelhalter is the Winton Professor for the Public Understanding of Risk at Cambridge University and presenter of Tails You Win: The Science of Chance.
More on Tails You Win: The Science of Chance
Professor David Spiegelhalter's articles on The Guardian.
Read David's lecture If you can calculate risk you can make better judgments.
More on David's website Understanding Uncertainty.
Comments made by writers on the BBC TV blog are their own opinions and not necessarily those of the BBC.
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