Nobody announced the walkers

Walk the Port Said seafront at sunset now and you will pass groups of women out for exercise, in trainers, talking, keeping a pace. Someone who left the city years ago and came back would say it changed overnight.

It did not. It changed one woman at a time.

First there was one, walking alone and being looked at. Then her sister came along, then a neighbour who had been asked by her doctor to move more. Each of them told someone. Each of them made it slightly less strange for the next person to put on a pair of trainers and step outside. Nobody gave a speech and nobody launched anything. The change spread sideways, from friend to friend, until it became simply what women on that street do in the evening.

We tend to credit change to the visible moment: the advert, the celebrity, the announcement. Those are usually signs that the shift has already happened underneath. The real work was done earlier, in kitchens and on phone calls, by people nobody would think to interview.

This matters to anyone hoping to change what people buy or how they behave. A launch can be seen in a week. A habit takes years, and it is built by people persuading people like them, conversation by conversation.

The ones who manage it are rarely the loudest. They are the ones who are not distracted by whatever is urgent today, who keep talking and keep showing up after everyone else has moved on to the next thing.

Most attention goes to the last five minutes. What decides the outcome is the next five years.