By providing a way to carry things without using hands, it restores a small but meaningful dimension of independence.

The person who uses a walker can now get their own cup of coffee, carry their own book, bring their own medication from one room to another.

These small acts of independence matter.

They matter to the people who can perform them and to the people who care about those people.

This kind of invention — the invention that improves not just physical function but human dignity — is not always the most commercially glamorous kind.

It doesn’t generate the breathless technology coverage that a new smartphone or a new electric vehicle generates.