Board Thread:Theories/@comment-26472215-20160222034906/@comment-27441457-20160229221044

I've just recalled a detail from the manga that supports the idea that AOT takes place in a far future rather than in an alternate past.

In Chapter 44, Hange compares the Armored Titan's plated skin to plated armor used "in wars long ago". Hange appears to be describing European plate armor, specifically the variety used in the 15th and 16th centuries based on Isayama's accompanying illustration, long after the 9th century.