Type 2: Bigger than expected

Example: "A chat-bot is created to help users talk about stressors in their personal life. A 6-month beta test shows that users claim a large benefit from talking to the bot, and almost never regret using it, so an open source version of the bot is made available online, which can be downloaded and used for free even without an internet connection. The software “goes viral”, attracting many more users than expected, until over 50% of young adults aged 20 to 30 become regular users of the bot’s advice. When the bot gives the same advice to multiple members of the same friend group, they end up taking it much more seriously than in the beta tests (which didn’t recruit whole groups of friends). As a result of the bot’s frequent advice to “get some distance from their stressors”, many people begin to consider dropping out of college or quitting their jobs. Ordinarily this would be a passing thought, but finding that many of their friends were contemplating the same decisions (due to the influence of the bot), they feel more socially comfortable making the change. Many groups of friends collectively decide to leave their jobs or schools. Public education suffers, and unemployment rates increase'(p. 9)