hypothetically:
* WEEK 1: a player gets a trainng of 0,8 pop
* WEEK 2: he gets another 0,8 pop in the same skill
so he has 1,6 of pop, resulting in a single skill pop
* WEEK 3: another 0,8 pop, getting 2,4 pop in total
Does it mean he gets pops in week 2&3 or he starts from 0 in week 3 and another pop is only possible in week 4??