Code decay has no physical ceiling, and agents remove the friction that used to slow it.

Zach Kehs's "There's No Limit to How Bad Code Can Get" took 461 points on r/programming: "If you continue to add floors and rooms to a building forever, it will collapse. Software faces no such constraint." He draws on Amazon order-processing systems that stayed in production at 1-2 orders per second while redesigns accumulated layers instead of replacing them. On AI he's blunt, saying LLMs will "accelerate you along the trajectory you are already on." Pair with a hard review gate, not a volume metric.