Collins 2012, part a: model variability itself; part b: model variability (precision) represented as physical uncertainty (accuracy). (wattsupwiththat.com)
«America's Navy still holds the title of best in the world, but our recent years of combat and physical uncertainty have eroded our warfighting advantage,» Admiral John Michael Richardson, chief of Naval operations, told the House Appropriations Committee on Defense in March. (finance.yahoo.com)