or maybe the ammounts required to grow ( grow as change from state n to n+1, showing a new tile of corruption) are kind of huge, which could be as its a world wide "event" ... so maybe expecting by sending 1k or 5k diplos you are gonna make it grow, its a bit pretentious.
Regarding whats "valid as food" ( military and diplo, or just military) is not very easy to tell : just because after a military attack it shows a new tile of corruption just prooves military counts, but doesnt mean diplo doesnt ( any single attack could be just lucky enough to make the gap from one stage to the next). Of course if few military attacks would make it change 2 states, that could proof something...
If any1 could positively tell if they have seen it grow after one of their visits with diplos... (military forces on their way can be spotted worldwide, so its easier to tell if it was you, or some1 else diplos (which would make no diference on this question) ..or a military attack.
So in conclusion , one of the following could be true, but unconclusive at this point :
a) grows with both diplos and troops . with each "kill" counting as 1 (towards a great number req.)
b) only grows with troops (same as before but ignoring diplos)
c) only grows with commanders( with would be a bit weird, but who knows..)
d) grows with number of attacks ( same as a, b and c choices but only counting attacks, not ammount of troops in each attack, highly unlikely)
e) grows with both diplos and troops, but each type may count diferently (for example based on upkeep/ exp)... so 1k T2 would add more than 1k T1... and 1k tier 1 cav more than 1k tier 1 spear
if any1 could think of any other posible factor..
Edited by Yhina - 06 Jun 2012 at 12:07