Unknown knowns

The sugary excerpt of the morning from Slavoj Zizek building on a quote from Donald Rumsfeld (it's hard to admit, but I miss Rumny):

When it comes to the risk of ecological catastrophe, we are dealing with "unknown unknowns", to use the terms of the Rumsfeldian theory of knowledge. Donald Rumsfeld set out this theory in a bit of amateur philosophising in February 2002, when he was still George W Bush's defence secretary. He said:

There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know.

What Rumsfeld forgot to add was the crucial fourth term: the "unknown knowns", things we don't know that we know - which is the Freudian unconscious, the "knowledge which doesn't know itself", as Lacan put it. To the assertion that the main dangers in the Iraq war were the "unknown unknowns" - the threats that we did not even suspect existed - we should reply that the main dangers are, on the contrary, the "unknown knowns", the disavowed beliefs and suppositions to which we are not even aware we adhere.