Join me in annotating @mweller's thoughtful exercise at thinking through the last 20 years of edtech. Given Martin's acknowledgements of the caveats of such an exercise, how can we augment this list to tell an even richer story?

Big “if”. And it’s one of those cases where defining those terms (“access”, “knowledge”, “free”, “good quality”, even “learners”…) is important but risky. We don’t want sterile debates, but we need to acknowledge that we may not be talking about the same things.