“That's right. Yeah. So, the idea being that, you know, in…” — The Pragmatic Engineer at 40:32
“That's right. Yeah. So, the idea being that, you know, in the old days when you'd be in a core mine, being away and you would release, you know, all sorts of toxic fumes and things like that. Canaries were a lot more sensitive to it. So, they have a little canary in a cage.”
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