Old Sole interrupts normal youthful days to force young people to interact with their environment in a different way. If the young shoe-wearer takes significantly more steps than the elderly individual with the walker, the shoes light up and vibrate uncomfortably, reminding the young person that somebody on the other end of the old sole is not able to keep up.
Limiting the speed of the shoes to the speed of the walker forces the young person to interact with whatever’s there, as someone with mobility issues may have to.
This is not meant to be a user-centered product, or particularly useful in any way. Rather, it is meant to make us aware of age, aging and dying as we walk. One day, the wearer of the shoe will be with the walker and will slow down the shoe walker, bringing the Old Sole full circle.