What is an availability cascade?
from http://energyskeptic.com/2013/cognitive-bias/ – an availability cascade is – “a self-reinforcing process in which a collective belief gains more and more plausibility through its increasing repetition in public discourse (or “repeat something long enough and it will become true”).”
When was the idea developed?
from the wiki – “The idea of the availability cascade was first developed by Timur Kuran and Cass Sunstein as a variation of information cascades mediated by the availability heuristic, with the addition of reputational cascades. The availability cascade concept has been highly influential in finance theory and regulatory research, particular with respect to assessing and regulating risk.”
For further reading, here is a book that covers this, by my definition, thoroughly