I suppose it comes down to the indidviduals - from both sides - actively involved in events as they unfold at the time. But let's be honest here, because, face it, historically speaking, we all know the Aussies have got 'form' for such gamesmanship (for want of a better term), and so players from opposing sides should be religiously guarding against the possibility of demonstrations of this rather unsavoury trait AT ALL TIMES. And, I'm sorry to have to say, and as much as I admire him, in this particular instance this was something Bairstow patently failed to do.