Once upon a time, far, far away in the magic kingdon of Mad Max, they (he) decided to change the engine rule, supposedly to decrease costs. "Use less engines, you're going to have to spend less money", came the flawless logic flowing past the lips of the infallable Mad Max. Of course, this rule has been slowly implimented and expanded, where now we are expected to see one engine last through two race events without incurring penalty.
And lo and behold, in the newest development coming from the people who makes the rules, there is an alteration. Now, on practice Fridays, there is an exemption from the engine rule. Now, those carefully conserved engines can be given a day of rest, and teams can install a fresh, new powerplant to allow the drivers to stretch their muscles, and entertain the crowds. Because to be honest, lately most of the front runners' engines didn't put in too much effort on Friday, they could not risk destroying an engine and going back ten places in the grid.
So my question to Max and anyone else is; just where the heck did this logic about decreasing costs get lost? Because now that teams can trot out a fresh engine each Friday, they are going to have a lot more engines in their inventories, they will have to build a lot more engines.
Assuming they still will use about the same number of engines in testing, there will be an added engine for each car for each race. 18 races, 18 new engines per car. And if all goes well, 9 engines (per car) for the actual competition.
Once again, a graphic example of Max making a decision and not thinking it through to it's final and logical end.