2 ms·no (joke [1]) [1] http://www.doc.ic.ac.uk/~klc/NegAsFailure.pdf http://www.doc.ic.ac.uk/~klc/NegAsFailure.pdfby sgt101 6y agono (joke [1]) [1] http://www.doc.ic.ac.uk/~klc/NegAsFailure.pdf http://www.doc.ic.ac.uk/~klc/NegAsFailure.pdf