Air is the most immediate necessity for life. We can go weeks without food, days without water, but only minutes without air. This is a biological hard-stop.

Before germ theory, humans understood "The Rot." We have a biological revulsion response to things that could poison us: the smell of decay, the sheen of slime, the writhing of maggots.

Social Exclusion = Death.

While modern life has changed, our fundamental anxieties remain remarkably consistent. Research and psychology identify several "universal" primal fears that haunt the human psyche: 1. Fear of the Unknown