4 ms·> We've been thrown back many times in the past Any specific examples of when this has happened?by anondon 10y ago> We've been thrown back many times in the past Any specific examples of when this has happened?kbart 10y agoDark ages? Ancient civilization collapses?Tepix 10y agoHere is a recent discussion of such an event: https://news.ycombinator.com/item?id=12767821 https://news.ycombinator.com/item?id=12767821