Does it Need to Be Magic to Be Science Fantasy?

I've posted an entry on Jeff VanderMeer's blog. http://bit.ly/7GjLWI

[...] Science Fiction describes improbable things that may happen in certain circumstances, while Science Fantasy gives a sense of reality to things that could never happen in the world as we know it, not even if certain conditions should come true.
If this definition (minted by Rod Sterling) is correct, several Science Fiction authors, particularly the ancestors, are Science Fantasy authors in reality.[...]

GHOSTS

Before flying to the World Fantasy Convention in San José, I had to post photographs of unsettling characters that haunt the town of Lecco on the Lake of Como.

Beware. They lurk behind windows, ready to sprout tentacles and eat you alive.

Their names are IL PHANTASMINO and LA ZUCCA.

The Zucca comes in two varieties, dark and light. Both deadly.