Esta doesn't particularly wish that he had a wand of Fox's Cunning, because he doesn't actually know that +4 Cunning would result in a different outcome for his own thought processes.  He's never had a Fox's Cunning and doesn't know what it can do.

The same applies to wishing for an education in computer science, or training in thinking generally.

Esta doesn't particularly wish that he had a wand of Fox's Cunning, because he doesn't actually know that +4 Cunning would result in a different outcome for his own thought processes.  He's never had a Fox's Cunning and doesn't know what it can do.

(The same applies to wishing for an education in Computer Science (dath ilan), or training in thinking generally.)