I wonder what he was doing on that computer.
It does say "The only escape os" after all.
Seriously, Ford is totally crazy when it comes to typos. He's merciless. Ford, this seems like an innocent one. You can let it go.
I like it, but I have to agree with enterpride: it doesn't rhyme.
I recommend reading a lot of great poetry. Just work your way through the Norton Anthology. That will teach you more than anything anyone could tell you here.