Do Christians simply PRETEND to KNOW?

Sam Harris here, makes the common critique that all religious belief is blind. Is he right?

[adamstewart]

It was quite funny when Richard Dawkins tried this towards John Lennox in their debate from years ago where he said 'faith' doesn't need to be used unless there's no evidence.

John brought up having enough to be faithful towards his spouse, a hidden inconsistency on Richard's proposal!

[kravitzn]

"For we walk by faith and not by sight"
Biblical faith IS blind faith.

How do you "know" about God's existence and character? It's by faith