3 ms·
If it could go either way, why are we so sure it is an unstable loop in one particular direction? Our world used to be much warmer than it is now, yet somehow
by yters 9y ago
If it could go either way, why are we so sure it is an unstable loop in one particular direction?
Our world used to be much warmer than it is now, yet somehow it cooled down a whole lot. There are just not enough lines connecting all the dots here.
- bigbugbag 9y agoI don't know what an unstable loop is. I was referring to the well defined cybernetics concept of feedback loop[1] which is simple: a feedback loop occurs when the output of a system applies to the input of the system. In the discussed case it is a positive feedback loop as outputs adds itself to input [2]. I don't understand what you are trying to say by pointing out earth was warmer and cooled down, but you can read about positive and negative feedback loop during glacial period on wikipedia[3]. [1]: https://en.wikipedia.org/wiki/Feedback#/media/File:General_Feedback_Loop.svg https://en.wikipedia.org/wiki/Feedback#/media/File:General_F... [2]: https://www.annualreviews.org/doi/full/10.1146/annurev.energy.25.1.441 https://www.annualreviews.org/doi/full/10.1146/annurev.energ... [3]: https://en.wikipedia.org/wiki/Ice_age#Positive_and_negative_feedback_in_glacial_periods https://en.wikipedia.org/wiki/Ice_age#Positive_and_negative_...