In the same issue there's an article wondering if Thor Heyerdahl was a sham.

For some odd reason it's not in the online edition though. In the paper edition it's just before wwh's article, and the table of contents says

>Presence of Mind: Kon Artist?
>Thor Heyerdahl's adventures sparked interest in archaeology and anthropology - but was he more shaman than scholar?
>by Richard Conniff