"I don't know."

It takes a lot of courage to be able to say "I don't know" in public. Great scientists have learnt to say that, but not the religious.

Jesse Galef from Friendly Atheist put it nicely by refering to a clip about UFO by Neil deGrasse Tyson :

Somebody sees lights flashing in the sky. They’ve never seen it before; they don’t understand what it is. They say, “A UFO!” The ‘U’ stands for ‘unidentified’. So they say: “I don’t know what it is… It must be aliens from outer space visiting from another planet!”

Well… if you don’t know what it is, that’s where your conversation should stop! You don’t then say it MUST be anything! Ok?

That’s what argument from ignorance is. It’s common; I’m not blaming anybody. Psychologists know all about it.

As PZ Myers summaries:

Complexity, complexity, complexity, complexity, complexity, complexity, complexity, complexity, ... therefore by design.

If we don't know something, we don't know something. Period. Putting god as a certainty as an answer to something we don't know is just ignorance. That's not how human has progressed.

We don't know the origin of the universe. Fine! We don't know the origin of the universe. Period. Some books written 2000 years ago do not have better knowledge than we have today. So those authors dont know the answer too. Saying that god created universe is just --- ignorance. Believing in something like this is just --- ignorance.

We don't know the origin of life. Fine! We don't know the origin of the life. Period. Some books written 2000 years ago do not have better knowledge than we have today. So those authors dont know the answer too. Saying that god gave us life is just --- ignorance. Believing in something like this is just --- ignorance.