I thought yeast only produces ethanol if it's respiring anaerobically, which is not a normal state for it to be in and is a short-term emergency alternative to dying immediately.
Kind of like lactic acid production in humans. We normally don't make much of it, certainly less than the rate that we can flush it through our system. We can produce more than we can handle for short periods of time if needed, but it's not sustainable. Put us in a situation where we have to keep producing lactic acid beyond sustainable levels for more than a few minutes, and we won't last long either. That doesn't make lactic acid proof that human bodies are self-limiting. I mean, we don't keep going forever, but lactic acid is not the reason for that.
Kind of like lactic acid production in humans. We normally don't make much of it, certainly less than the rate that we can flush it through our system. We can produce more than we can handle for short periods of time if needed, but it's not sustainable. Put us in a situation where we have to keep producing lactic acid beyond sustainable levels for more than a few minutes, and we won't last long either. That doesn't make lactic acid proof that human bodies are self-limiting. I mean, we don't keep going forever, but lactic acid is not the reason for that.