The Impossible Poem

This is a spin-off from a poem I posted last year, the version of last year being shorter, and also titled differently:

Causuality

When if becomes then

and then becomes when,

cause and effect

then disaffect

cause and effect

and then becomes when,

when if becomes then.

I'm not sure it holds together, but that's okay, for the entire poem disaffects itself, anyway, as was intended already as I was writing it.