Comments by "John Roberts" (@view1st) on "Numberphile" channel.

  1. Does any of this have a practical application?
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  2. Why is it a problem and what would solving it do?
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  3. Do all mathematicians write on brown wrapping paper. Don't they have graph paper or foolscap?
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  4. What practical application do these 'Catalan numbers' have, is any?
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