Burnout: The Canary in the Coal Mine? – ChangeWithoutBurnout
Oct 09, 2019· Back in the original days of coal mining, it was well known that some mines emitted a toxic gas. Miners released canaries to determine if a mine was dangerous to workers: These birds were kept in cages to prevent them from leaving the mines while they "did their job." Only if they survived were the mines deemed to be safe.