Rolling
Balls
An oft-repeated
type, since the times of the Marquis of Worcester. This type has been
made with many sections, each section advancing a step in order to
overcome its propensity to find a balance and an excuse for stopping.
(Subsection 917, from
p.366)
From: Gardner D. Hiscox, M.E., Mechanical Appliances and Novelties of Construction (1927), Norman W. Henley Publ. Co.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
