I remember that the phrase “having said that” etc etc followed by the contrast was pretty normal. That having been said – is barely normal and even if English is my 3d language , I suspect that this is grammatical nonsense, yet you hear it all the time.
At the University College of Dublin, two computer scientists did a linguistic analysis and found that “herding” has its linguistic counterpart in that “You get verb and noun convergence as the market goes up because there is more agreement “. Apparently the correlation was quite accurate. Next time you hear - kick the can down the road , looking forward , eclectic , or just simple, gold is going up – maybe it is time to pack up.
This was presented at the International Conference of Artificial Intelligence in Barcelona. That it was artificial is redundant.