Life at the carnival

Knowing there is & Knowing there isn't

If I contend the atheist view cannot maintain whether there is a God or not with their incomplete knowledge, how can I contend whether there is a God with my own lack of knowledge? 

If anyone conceives of many Gods, like some ancients did, then they are indicating they only conceive of Gods being not much different than themselves.

I notice that there has long been the view deep in our instincts that God places ideas in our hearts. We did not create ourselves. Correct? Not only that, but we did not even fathom one thing about existence in any form. So how can we envision, with any luck, very much from physical science?

One such scientific fellow however did figure out that there was a 67% chance there was a God. Like any carnival it appears that in some quarters "you pays your money and you takes your chances."