It's worth re-running this item (shared this week by Doug Belshaw). "Since the 1960s, experts have been trying to convince people that the learning pyramid is bogus. But for every article written exposing its weaknesses, there seem to be dozens of instances where it is invoked as truth in presentations, websites, and trade publications." If you want proof someone hasn't done real research, watch for the cone of experience to show up in their work.
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