This will have to be my last post on the thread. The unwillingness to engage with the point by (a group hitherto avoided as a cliche) the folk police - is astounding. Every rhetorical trick has been played plus wounded feelings, evasion and avoidance, snippy personal attacks none of which get to the heart of the topic.

The 1954 definition should be consigned to the era that spawned it. People have pointed out where the weaknesses and limitations are, if vested interests are playing for time addressing them that's their problem.