Overcost of advances????

[Rebel Rick]

Hi,

maybe i am missing something, but...

Anybody knows why you have to spend more science points than the actual cost to get a breaktrough?

I was looking into the Science Manager, and it allways shows that i need more points than the presented cost of the advance. For example, cost is 15000 but i have acumulated 16500 and still there is not a breaktrough!

Please, let me know what am i missing! Has it to do with governments?

Thanx