alf,
we might consider ‘if’ we should use it
There seems to be a significant number of people who have already made up their minds to go down that route, for reasons that satisfy THEM. However my own suspicion has long been that it will actually prove to be a dead end for many decades to come, for fundamentally non-technical reasons. My motive for posting the question in its original form was to see if that view is supported by others who actually have better knowledge than I do.
Steve