GB - Liar or incompetent?

So, it wasn't Call Me Dave who tripped Mr Brown up at Prime Minister's Questions this week but a Tory back-bencher who had bothered to do some research in the Commons Library on the topic of funding for the military. Tony Baldry challenged Gorgon on his statement to the Chilcot Enquiry that military spending had risen "in real terms" year on year under the Labour Government. He pointed out that there were at least three years where this had not been the case, according to the Commons Library.
Forced onto the back foot, Brown confirmed that he had already written to the Enquiry admitting his error. Unfortunately, Cameron and Clegg were so overjoyed at the prospect of landing a few cheap shots that they failed to ask the obvious question: If Brown had already written to the Chilcott Enquiry, how long had he been aware that the evidence he presented at the enqury was false? Moreover, how could a man who claimed that it was only his financial savvy that had saved the world's financial systems from total collapse be so utterly useless at adding up that he didn't know that, during the three fallow years Baldry mentioned, military expenditure had actually declined rather than increased, in real terms?
The truth is that we cannot know whether or not he simply made a mistake or simply lied to Chilcot.
Whichever version is the truth, it cannot disguise the fact that the man who wants to lead this country for another five years is either a serial liar - or a serial incompetent.
It does not exactly represent a very rosy future for the rest of us, does it?