Sleeping at night, you think about the people who spend their lives alone, and you wonder how people can possibly bear it. As you lie in bed together, you realise people all over the country are driving out to the outskirts of their towns, just to hear the faintest signal that there are other people like them in the world.
It’s unlikely that the two of you ended up together. When people ask how long you’ve been together, the answer sounds like a long time. Other couples - including your parents - have gotten married and bred children in far less time. Sometimes, the figures scare you. But one night, you get out of bed and do the sums - this time with a calculator - and discover that the chance you found each other is exactly 0.0049 out of 100. You even have to adjust some of the decimal points in your calculator to work out the maths, because the sum is so extreme, so beyond conceivable limits, that the calculator originally gives you an error message.