It says that it provides a +50% production bonus towards medieval/renaissance era melee, anti-cavalry and ranged units. OK. But when i mouse over any of those units, such as knights, crossbowmen or pike and shot, the bonus is not reflected in the final production cost. Neither is the bonus shown when i mouse over the city's production amount after selecting to build one of those units. E.G. Crossbowmen have a base cost of 180 production. I am playing with the quick cost multiplier, so crossbowmen cost 120 production. Even with the policy slotted, it still says 120 production.