Productivity is a lagging indicator. Anxious, scared, overworked people can still be "productive" for weeks even months, it's just not sustainable in the long r

Productivity is a lagging indicator. Anxious, scared, overworked people can still be "productive" for weeks even months, it's just not sustainable in the long run. Similarly, many systems can continue functioning (seemingly without a hitch) when you cease all maintenance and preventive care. Eventually, they will fail.