
Stuart is quadriplegic; he can’t use his arms and legs at all; he can move his head and has about 5mm of reliable control in his right middle finger, and he has severe, complex, and degenerating health issues. This is far from the most interesting thing about him, but it’s important to grasp the extent to which he must “act at a distance” by designing systems and processes to carry out the business of daily living without physical contact. Imagine a house with no light switches, no door handles, no buttons on the phone or taps on the sink or knobs on the boiler. How would you make it work? It’s an invigorating challenge.