Why do edtech folk react badly to scepticism? Part 3: Sunk cost fallacy
After writing a fairly frivolous article expressing scepticism about using iPads in schools, and then experiencing a torrent of invective from various iPadistas, I began a series of posts exploring why asking questions about education technology provokes such an egregious responses. In Part 1 I wrote about vested interest and in Part 2 I addressed confirmation bias. The focus of this third installment is the sunk cost fallacy. We have an irrational response to having wasted time, effort or money: I’ve committed this much, so I must continue or it will have been a waste. I spent all this time training my pupils [...]
