Neil Birrell: When will 'value' start to perform again?

I have been writing these columns for Professional Adviser since January and, for many of them, the title has been a question - which got me wondering why that was the case. I concluded it is because posing and answering questions is what I do for most of the day. ‘Will the Fed cut at the end of this month?' ‘Should the Fed cut?' ‘How can you buy bonds on negative yields?' ‘Are US equities cheap or expensive?' It is in fact possible to come up with an answer - or at least an informed opinion - on most such questions but there is one that has everyone stumped at the moment: ‘When will "va...