On Logic and Alternate Universes

[Jackalope]

There can be no successful hypothetical where 2+2=5.

Sure there can.

In *this* universe...

1+1=10
7+1=10
9+7=10
9+8=10

...can all be true, but you'd argue that they can't - and that they'd violate identity - and you'd be wrong, because of your myopic view.

Similarly, 2+2=4 can be false - and violate identity - in *this* universe.