Hugh Herr: The new bionics that let us run, climb and dance

This is a great example of the kinds of changes that are currently possible and will become possible.

It's an amazing collection of stories, and has some interesting insights into disability and limitation.

Some of these kinds of technologies will completely redefine how we see ourselves physically. It will change work roles, social roles, recreation and many other aspects of life. Potentially there will be varying levels of access subject to where we live and our access to wealth and resources.

In turn that will create an imperative for us individually and collectively to consider how we define ourselves and the roles we inhabit. Is there a line where augmentation of our physical selves should stop? Where would it be and why?

It is an exciting time to be alive!