He encontrado en la web el artículo donde aparece esta célebre de Arthur C. Clarke.

Apareció en Junio de 1980, en la revista Omni Magazine, que puede leerse online aquí.

Otro subrayado interesante que puede dar idea del contenido de este artículo puede ser:

Yet the teaching profession has survived 
the invention of books. It should welcome 
the development of the electronic tutor 
which will take over the sheer drudgery, the 
tedious repetition, that are unavoidable in 
so much basic education. By removing the 
tedium from the teacher's work and making 
learning more like play, electronic lutors will 
paradoxically humanize education. If a 
teacher feels threatened by them, he's 
surely in the wrong profession.