Life is full of risks and uncertainties and, if you worried about every little potential problem, you would never get out of bed in the morning. So which risks should you avoid and which should you take? How do you weigh up the relative dangers?
Now there is a web site which makes it all clear: Understanding Uncertainty. Learn the mathematics of coincidence, explore the outcomes of the National Lottery and figure out how long you have to live. Yes, it can be serious stuff. A little understanding of the statistics of risk can resolve your irrational fears and substitute some rational ones instead.