In Ancient Rome, a key imperial duty was to maintain the flow of grain and gladiatorial entertainment to the masses of Rome. Woe to the Emperor if the flow of grain was interrupted and the entertainment fell in quality. The Empire’s mantra was that the grain must flow! For Alberta premiers, charged with the guardianship of an exceptional economy whose prosperity is rooted in the volatile revenues of the oil and gas sector, the mantra is the natural resource revenues must flow! It is no surprise that Alison Redford is leaving. There seems to be a relationship between the weakening of government resource revenues and premier exits.