Dear Jerry,
I still have the problem - after our discussion, I sent a couple of messages to urth at urth.net, they did pass. Afterwards I sent more, they didn't. Now, it is written that we have to answer to urth at lists.urth.net - I tried this before, it didn't pass, I tried this again, with the message below - it didn't. I don't know what to do, I am a bit discouraged -
I include below two messages that didn't pass. I send cc to both urth at urth.net and urth at lists.urth.net - just in case
Best
Sergei Soloviev
1) (negative mass)
If we discuss Gene Wolfe's books and not relativity laws as such,I would like to recall the explanation how the flier functions (given by the old autarch in "The Citadel of the Autarch"). It is
one of a very few places where I found the explanation
not plausible, and maybe even some misconception of GW himself (usually he is very careful with scientific explanations - of course they can be fantastic, but usually plausible in the context). It is said that inside the flier there is a certain quantity of antimatter. It is said that it has negative mass and it is repulsed by Urth. The flier is kept near the surface of Urth by force (ropes). It looks strange then that while flying it remains within the atmosphere, but even more - that it fells when it is hit by some enemy missile AND that there is no enormous explosion when the antimatter enters in the contact with the atmosphere.
2) (bridges)
I have seen some very old bridges, my impression is also that the slum area
near the river, along the waterway, il low and often flooded, and the bridge
at this side is much higher than the waterway - the entrance for carriages
may be much farther inland, this is why Severian has to go up from waterway by the flight of stairs. The carriages and people crossing the river mostly enter the bridge in safer and better lit area some hundreds meters inland, and are afraid (and probably would be agressed by slum dwellers) if they would not follow the "main road" (perpendicular to the river).