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The Guardian - UK
The Guardian - UK
Lifestyle
David Sumpter

Saved by a butterfly: how chaos theory became the secret ingredient in my happy marriage

David Sumpter seen through a transparent sheet of mathematical equations he is writing in red, and with a whiteboard of more mathematical equations behind him
‘Perhaps, I thought, I could prove to my wife that planning is pointless and that disorder is inevitable’: David Sumpter at work. Photograph: Mikael Wallerstedt

In the black and white yin-yang symbol of Chinese philosophy, the yin represents disorder and the feminine, while the yang represents order and the masculine. In my married life the gender stereotype is reversed. My wife is order and I am chaos. She wants to plan what we are having for dinner every night for the coming week. I feel there isn’t much point thinking about it, “because what if we want to take the kids swimming one evening or meet up with friends?”

Our differing approaches have led to a few animated discussions (to say the least) and it was after one of these that I started to think about chaos theory: the mathematical theory behind the parable of the butterfly and the storm that gives rise to the so-called butterfly effect – the idea that the flap of the wing of a butterfly in the Amazon can set off the atmospheric events that lead to a storm off the coast of Texas weeks later. Perhaps, I thought, I can prove that planning is pointless. That disorder is inevitable and we might as well accept our lack of control.

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