Well, perhaps I should go back and read it again but I don't think it is that big of a deal. Just look at the quest as a whole, Gandalf himself did not even know which way except for South from Imladris.
As far as the rest of the journey goes - Gandalf 'the Gray' would have been knocked off by Saruman, let alone make it to Gondor.
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History shows again and again
How nature points up the folly of men
Go, go, Godzilla!
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