The important thing is that evidence shows us that something is true. Without it, we are merely guessing. A bit like religion does. Science certainly didn't get to where it is today by guessing, if it did, then it would not be knowledge.
Religious claims are just invented guesses which are so improbable we can discredit them entirely, pending evidence.
I'm not discrediting science, science has its purpose and is very useful. I'm just saying that we do not all there is to know, how can someone make bold assumptions. Atheists do not even speculate, science is completely correct about everything there is.
This just confirms what I previously stated about atheists, if they had lived in another time period, like say the 1600s they would believe what science at that time had come to without questioning anything.