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Did you say from your experience that the possibility of the canals could be ruled out

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or is it still open to debate?

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Well I think it's open for debate on the ground that those photographs only cover about 1%

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of the surface.

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When the mariner photos were first released there were quite a few people that had said

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that the photographs ruled out the possibility of life on Mars.

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The answer I have given to this frequently is that the first 20,000 photographs of the

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Earth of the only one that showed us the life on Earth.