Cordwainer Fish
Imp. Int. Scout Svc. (Dishon. Ret.)
You can put psionics in your story and John W. Campbell will still buy it [1]. Not so magic.(And, yes, I'm fully prepared for incoming strident demands that I define the difference between 'magic' and 'psionics' along with accusations that I'm being arbitrary, inconsistent, etc....)
[1] In fact, it will increase the chances of him buying it.