(urth) The Tomb of the Unknown Severian

[Tony Ellis]

Joel wrote:
>It could also be a tomb fashioned by the "original" Severian, the
>Severian who failed the test in UotNS, went back in time, and...

and Jeff Wilson:
>Given that Sev1 succeeded in becoming Autarch but failed in Yesod...

Where does this idea come from that 'the first Severian' failed the
test in Yesod? I've always understood that he passed.

Severian doesn't tell us either way, but surely the fact that the
first Severian ended up with the power to walk the corridors of time
is a pretty big hint?