We do know of Earth, I believe - the wizards have done rather a lot of research on a Roundworld. You can gather from that that the Disc is a literal disc, and yes, it's every bit as preposterous and trying as it sounds.
[At this point, Sherlock's opinion of Susan may rapidly reverse into 'this person is obviously insane'.]
no subject
We do know of Earth, I believe - the wizards have done rather a lot of research on a Roundworld. You can gather from that that the Disc is a literal disc, and yes, it's every bit as preposterous and trying as it sounds.
[At this point, Sherlock's opinion of Susan may rapidly reverse into 'this person is obviously insane'.]