Ruby: This [is] backed up by research that indicates that over half of those who leave do return
OMG, here we go again! Empty assertions of "research" without any actual EVIDENCE or even a reference. I guess I shouldn't be surprised; you learned it from the WTBTS.
What Steve says:
Steve2: I'd be interested to know whether there has actually been an increase in numbers returning. Has there? Evidence please. - [Emphasis added]