Erich Bloch, a respected semiconductor expert at IBM and later head of the National Science Foundation, stated that Moore’s Law would cease to apply when transistors reached a channel width of 250 microns (250,000 nm). Ten years later, this limit would be significantly exceeded. 35 years later, the channel width would reach 2 nm. The estimate of the limit for the minimum linear channel width of a transistor was off by at least 125,000 times.
