The physics of undergraduate text-books is 90% true; the contents of the primary research journals of physics is 90% false.
John ZimanThe 'size' of science has doubled steadily every 15 years. In a century this means a factor of 100. For every single scientific paper or for every single scientist in 1670, there were 100 in 1770, 10,000 in 1870 and 1,000,000 in 1970.
John Ziman