All I know is that TV programs look more and more to me like TV produced by the blue bits for the blue bits. We've got three boob tubes and they're mostly collecting dust.
Yup. Not too accurate. A lot depends on memory and there is a tons to write down. The first day in the diary is Thursday and the last day is Wednesday.
The set meters were introduced in 1987 to give a more accurate reflection of what people were watching.