Sier bare som Dutch economist Dr Bas ter Weel:
"Changing a manager during a crisis in the season does improve the results in the short term," he says. "But this is a misleading statistic because not changing the manager would have had the same result."
Ter Weel analysed managerial turnover across 18 seasons (1986-2004) of the Dutch premier division, the Eredivisie. As well as looking at what happened to teams who sacked their manager when the going got tough, he looked at those who had faced a similar slump in form but who stood by their boss to ride out the crisis.
He found that both groups faced a similar pattern of declines and improvements in form.
Alt går i bølger, problemet vårt er ikke (hovedsaklig) BMD.