The Millstone Governor
"By using centrifugal force to automatically adjust the gap between spinning millstones, the flyball governor prevents friction from scorching the grain when the winds rise."
In the seventeenth century, Dutch mills faced a persistent danger. When winds rose suddenly, the sails spun too fast, driving the upper millstone against the bed stone with excessive speed. This friction could scorch the grain, spoil the flour, or strike sparks that ignited the dry dust in the mill.
To solve this, millers installed a centrifugal governor: two heavy iron balls suspended on pivoting arms from a vertical spindle. As the speed increased, the balls flew outward, raising a collar that adjusted the lever controlling the millstone gap. The governor automatically widened the stones during high winds, maintaining a uniform grind.
We often react to an increase in speed by pushing our resources harder, forcing our teams and codebases to absorb the heat. But a healthy system must adapt. Like the flyball governor, we need feedback loops that widen the gap when the pace accelerates, protecting our craft from catching fire.