A questioner questioning "Is there a God?" has just answered the question by questioning it. His formal answer may change the automatic answer, or it may not.

If there is a God, the answer to the question is irrelevant. If there isn't a God, then the questioner becomes the God, so the answer is always "Yes."

When you observe the universe in detail, you find many simple operations and many complex ones. The simple ones may be so simple that they are entirely overlooked. And the complex ones are so extremely complex that they may never even be seen by someone trying to find them.

Since there is this simplicity and complexity combined, nobody can really tell much of anything. The point is, that when you have either simplicity or complexity that is beyond us and out understanding, you are starting to see God, whether you like it or not, by dictionary definition of the word.