Yeah, that's the point !

Although I'm still newbie in this forum, I already read all common sense for this forum. But yes thats the point.
It's like for your 2 week of "activity time" you got 1 activity everyday, for every posting you made. (Is it still confusing ? I think so

)
Let's make it simple, just imagine 2 weeks contain 14 days and activity count is like 0/14.
Your activity amount will increase along with your post but, what's make activity different with post is : the
max amount of activity is 14/14. and will reset after 2 weeks
It can be higher. If you make 1 post per two weeks, you would have 13 activity points per two weeks. Once you post some posts, you can raise your activity immediately. Activity will never reset, it just builts up, it cannot be deducted, only to be used.