Unforeseen incidents in technology are on the rise, with enduring effects on the systems we build as well as how users interact with them. With open source ecosystems increasing in complexity and growth as sociotechnical systems, we must examine how often these events are happening and if they are truly unexpected.

This talk will explore a series of events in open source history, some of which came as a surprise to users of the open source project and industry as a whole, had a wide and long-lasting impact on technology, or was inappropriately rationalized after the fact with the benefit of hindsight.