Assuming that PREtending is what came before - what exactly would be the meaning of 'tending'. And, dare I ask, what would POSTtending be?
She enjoys the pets so much, she wants to eat the limb that's scratching the spot.
Madness string 2142
If you find that your logic gives you contradictory results, then you probably started out wrong. Go back and re-examine the assumptions you started out with, and you'll find that one is wrong.