Hi!

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Hello, Schroffb and Kingst19! I'm happy you have chosen Colonization of Mars to add to. Just a point: using "early" and "concept" is not redundant. A concept is not inherently early, we humans always have concepts and they evolve over time, so they can be early or late. Cheers! --ExperiencedArticleFixer (talk) 15:49, 9 December 2016 (UTC)Reply