To begin with I didn’t know how to walk. I was able to learn to balance (with parental help). I was able to navigate the world on two feet. To engage in a series of tiny falls. The consequences of misjudged falls change. They grow with us.
London is designed for a particular type of body. A body able to rush up and down stairs, swoop on to trains in rush hour crowds, push back against other bodies as they pile into spaces already full to the brim. In one step we can feel how our mobility changes. A few steps more and we can see how cities are designed for a specific type of mobility.