Is Human Happiness Ultimately Just Signals in the Brain?

In this episode, I share a morning run on Muui-dong, a small island near Incheon International Airport, and a question that stayed with me from the flight over: is human happiness ultimately just signals in the brain?After running 16 kilometers by the sea, feeling the weight in my legs and the cool air on my skin, I found myself thinking about AI, dopamine, and whether a perfectly simulated world could ever replace physical reality. If technology one day recreates not only pleasure, but even fatigue and breath, what would make the real world different?This is a quiet reflection on the body, consciousness, and what it means to feel “here” — in a time when virtual experiences are becoming increasingly convincing.