The impact and speed of change is only something that we see with hindsight. I was issued with my first mobile phone and laptop a quarter of a century ago. Now I can barely remember a time when they didn't exist - but I can't pin down the moment when something actually changed. Some of us can remember the Betamax versus VCR debate, but few of us recall when they both became redundant. Are we on the cusp of something similar in construction, or is it that I am now more aware of such things?
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