A Brain With No Body, and Its Five Senses

The lesson

The recipe card with no hands

Taped inside my stall, where customers never look, hangs a recipe card in a plastic sleeve. Prawn stock, the order the noodles go in, when the squid follows. It is a brilliant card. It holds everything the old boss knew. And it cannot fry a single plate. A card has no hands, and no place to stand.

Every AI in this course so far is that card. Brilliant on paper, and nowhere to stand. In this serving, the recipe grows hands.

A brain with no body

This shift has a name. Everything so far has been software AI. From the prawn classifier to the service agent, it is all a brain with no body. Its worst mistake is a wrong answer. Embodied AI is the day that brain gets arms and a place to stand. And the body changes everything. A wrong answer can now knock over the stock pot. For software, a wrong answer costs nothing. A body has to survive its mistakes.

Counting my senses at the wok

Now put the robot chef where I usually stand in my stall, and look at what I do without thinking. At the wok, I watch the colour of the noodles. I smell the prawn stock before it peaks. I hear the sizzle and know what it means. A wet hiss says stock. A dry crackle says frying eggs. I feel the wok get heavier as I stir, and the heat on my skin shifts my stance. And under all of that runs the sense nobody counts: proprioception, knowing where your own arm is without looking.

A robot needs all of those senses bolted on. A camera for eyes. A microphone for ears. A chemical sensor for the nose. A force sensor for the palm. A thermometer for the skin. You were born with them. The robot buys them, the way I buy a wok. And the forgotten senses, touch, heat, and body position, matter most at the wok. The camera is the easy part.

Brain or body, 6 answers

Now you sort them. Brain, or body? I will name 6 AIs. ChatGPT. A robot vacuum. FaceID on a phone. A delivery drone. The recommendation engine behind a video app. A surgical robot in an operating theatre. I give you three seconds.

Pause here for three seconds.