I found this confusing. At one point the author talks about exponential decay (in which something gets smaller more and more slowly), but at another point he d

I found this confusing. At one point the author talks about exponential decay (in which something gets smaller more and more slowly), but at another point he describes something that sounds more like an auto-catalytic process (where something reaches a tipping-point and then explodes, or in this case implodes).