Has your brilliant technologist masterminded a money-minting breakthrough? Or a whizzkid manager found gold in a cash-draining black hole? You will want to retain these revolutionaries in the hope of further wonders. Dead wrong, according to Lenin. Author Maxwell W Hunter II explains Lenin's theory: 'After a successful revolution, the power of the militia leaders must ... be liquidated immediately before they get any bright ideas about controlling the future.' Lightning doesn't strike in the same place twice. Thus, ICI wouldn't back Nobel prize-winner Sir James Black's new brainwave to follow beta-blockers. He promptly quit for the future GlaxoSmithKline and produced the multi-billion-dollar anti-ulcer drug Tagamet. It takes an exception to prove every rule.