In contrast with the crash and burn performance of companies trumpeted by business gurus in the 1990s, the firms profiled in ‘Lean Thinking” – from tiny Lantech to midsized Wiremold to niche producer Porsche to gigantic Pratt & Whitney – have kept on keeping on, largely unnoticed, along a steady upward path through the market turbulence and crushed dreams of the early twenty first centu…