DOES NOT COMPUTE

To teach the computer illiterate really is a thankless task
It's something I will never try again so please don't ask
If you think you might, I'll warn you before you embark
They say "I understand" but you know it missed the mark
Even the simplest of concepts passes them by completely
And you have to repeat yourself and smile at them sweetly
The Incompatibility exists between a computer and a dunce
And you only have to punch things into a computer once