The school research lead and the half-life of facts – why everything we know has an expiration date | Gary

One of the main reasons why school leaders needs to be constantly engaged in evidence-based practice, is that the evidence we might use to support decisions can become ‘rusty’ (Hargreaves and Fullan, 2012).   Evidence that we have relied on in the past may no longer be current or applicable, indeed advice based on the evidence may have just been plain wrong.  Indeed, (Arbesman, 2012) argues that just like radioactive material, ‘facts’ have a half-life and decay over time.  Arbesman states:
Facts, in the aggregate, have half-lives: We can measure the amount of times for half of a subject’s…

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