Does It Need to Be Magic to Be Science Fantasy?

Gio Clairval is an Italian born speculative fiction writer who commutes between Paris and the Lake of Como.

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Gio: Lately, I've been writing Science Fantasy.
Felicino: And what the heck is that?
Gio: No one knows exactly.
Felicino: Cool.
Gio: I mean that writers and critics haven't come up with an universally accepted definition but, as I've been writing Science Fantasy, I could try to define it.
Felicino: I thought writers were the least reliable guys when it comes to define what they're writing. ...