We humans have a tendency to assume that everyone else is the same as us – the same age, the same level of fitness; the same abilities; the same knowledge – until proven otherwise.

Usually, we design our systems and processes around these assumptions, and get heavy doors, high kerbs, long-ways-round walking routes, short crossing times; interfaces that require precise and accurate finger-control, or clear eyesight, or sharp hearing.

We’ll all get old.

I suspect that if we designed for that, things would be a lot easier for everyone, right now.