Ключевые слова: 30 to 34 years, 3034 years, accuracy, caucasian ethnicity, concentration, determination, focus on foreground, grinder, grinding, indoors, industrial building, industrial facility, industry, looking down, machinist, male, man, men, mid adult, mid adult man, mid adult men, numeral, october 2016 release, orthographic symbol, planning, precision, preparation, selective focus, shirt, skill, symbol, technology, thinking, tshirt, two people, waist up, wearing, work tool, working, workshop,