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Sarogo Gotye's avatar

I don't know that hard steps n has been very well defined. Preconditions like the oxygen absorbing into free elements, and allowing oxygen levels to rise, or the crust not being molten seem to constrain various hard step intervals. Admittedly our uncertainty is large enough that you could argue for dozens of hard steps, but the other end of estimates also seem to put it at 1 or none.

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Tristan Cook's avatar

Thanks for your response Robin! I have written a reply here

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