You see, there was this computer programmer whose laptop went south on him, and he was looking around for a temporary PC so he could work.  The only thing he could find was an old 286 in a moth-eaten cube by the restrooms.  The whole thing was really dusty, so he started to dust off the keyboard.  Almost immediately - say, after 30 seconds or so - a fuzzy, turbaned face appeared on the monitor.  Then words began scrolling across the screen.  They said, "Thank you for using the Parsi-286.  I am your genie, and you have been allocated three wishes.  Please type in your wishes, as we have no voice interface whatsoever.  Also, the graphics are pretty crappy, as you may have noticed."

Well, the programmer, thinking this was his lucky day, typed in, "I want to be the richest person in the world."

"Your wish is being processed," replied the genie-screen.

After chugging away for 20 minutes, the following message appeared on the screen:  "Error 241:  Insufficient storage.  Wish cancelled."

Not the least deterred, our hero typed in Wish #2:  "Power!  I want to be dictator of the world!"

"Your wish is being processed."

After about 15 minutes, this message appeared on the screen:  "Error 438: Insufficient power.  Wish cancelled."

"Ok," thought the programmer, "let's go for #3."  "Intelligence!  I want to be smarter than Einstein!"

"Your wish is being processed."

This one took hardly any time at all:  "Error 142:  Out of memory.  Wish cancelled."

The moral of the story:  "Magic, when sufficiently constrained, is virtually indistinguishable from technology."