Cyclops

The ancients blinded their seers to ensure they practised their art
Leaving one lidless eye in the centre of their heads.  How far
We've come you might say, how much better to be a flock
Of Cassandras, prophesying into the wind, than to blot
Out our eyes and rely not on art or science, but smarts.
Yet what a blind world we live in, for all that vision.