[tsunamifury]

I believe in that speech Žižek was just referring to assumptions -- i.e. the things we don't know we assumed, but are acting on subconsciously. The famous slide of how to invade Iraq made the invasion look simple and definable -- but in fact that assumption proved very wrong.

[opportune]

" just referring to assumptions -- i.e. the things we don't know we assumed, but are acting on subconsciously"

This is much, much more than "just assumption" to Zizek. In fact, this is what he refers to as ideology and it's basically the main subject he is known for

[tsunamifury]

Sure, assumptions are shorthand ideology for the brain.

[ghda]

Invading Iraq was easy, the problems all arose at the “okay, now what?” level.