nk497 writes: "The vast majority of PCs sold by British PC makers are running Windows 7 — not Windows 8. PC Pro spoke to several PC builders, with some reporting as many as 93% of recently sold machines were on the older OS. One company initially sold its PCs with Windows 8, but feedback from users soon changed that. Customers quickly began to specify systems with Windows 7, those with Windows 8 "took delivery and wanted to change back to Windows 7" – a process the firm described as a "nightmare". Another firm found success by installing a "start menu" tool on Windows 8 machines, and others said the switch would have gone smoother if Microsoft has offered a Windows 8 tutorial or better explained the new OS."
Thus mathematics may be defined as the subject in which we never know
what we are talking about, nor whether what we are saying is true.
-- Bertrand Russell