Influenced (not to say deceived) by the naturalistic cosmogonies of their authors, most of the “classical” studies of shamanism postulated the belief in “other” worlds, a kind of parallel universe where spirits would live and shamans, alone, would have the ability to surrender. It is the theme of the shaman as a smuggler (hence its sexual ambivalence), the theme of the shaman as a cosmic traveller, riding the “airs” (nagging and/or infinite) on his “drum-frame”... Amazonian shamans, however, differ from their Siberian counterparts (if the term “counterparts” is appropriate in this case). Sharanahua’s example clearly shows that what is at stake is not the confrontation of two worlds, each occupied by ontologically immeasurable beings – the scheme of transcendence, installed by default in the Western imagination – but rather the existence of a single world, where the difference between a human and a yoshi is more of a degree than of nature.