LarryG:
When observing Earth's night side, it should be possible to see lights
from cities and major highways.

Cities, maybe. Highways, almost certainly not.

On the daytime side, it may be possible
to see airport runways, if sufficient contrast with surroundings,

Too small, and in urban settings, insufficient contrast.

sunlight
reflecting off glass or swimming pools,

Unlikely, unless your pool is a few hundred miles wider than mine.

and almost certainly long shadows
cast by the Great Wall of China.

The GWOC doesn't cast long shadows. As I said earlier, "most of it
consists of piles of rubble that are barely distinguishable from the
rest of the rocky landscape that it traverses." One would have a
greater chance of seeing the shadows of the pyramids at Giza or the
shadow of Mt. Tabor (Har Tavor) in the Galilee. The latter two are also
quite unlikely, however, as the contrast between these shadows and the
ground would not have very great contrast.

Besides, if I had an 8" telescope on the moon, where it is unlikely to
rain tonight, I could find better things to look at than the Earth.
I've seen a lot of it up close already.

Davoud

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