The
most common recurrence
The most common
recurrence of the perpetual-motion idea since the thirteenth century.
Inviting to look at, but the resolution of forces in the individual
arms and balls demonstrates the equilibrium of forces and its inability
to move.
(Subsection 920, from
p.368)
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
