So the analysis focuses on a single variable: cost, specifically the inflation-adjusted price of one “unit.” (A “unit” is itself sometimes a fluid concept in a

So the analysis focuses on a single variable: cost, specifically the inflation-adjusted price of one “unit.” (A “unit” is itself sometimes a fluid concept in a rapidly changing field. Consider what “one transistor” meant in 1969, and what it meant in 2005.) So, for example, recasting Moore’s Law to translate computing power into unit cost morphed the familiar “computing power doubles every 18 months” into “transistor costs drop by 50 percent every 1.4 years.” (Wright's Law is surprisingly hard to google) source: http://spectrum.ieee.org/tech-talk/at-work/test-and-measurement/wrights-law-edges-out-moores-law-in-predicting-technology-development http://spectrum.ieee.org/tech-talk/at-work/test-and-measurem...