Ключевые слова: 40s, beginning, black, business, career, cell phone, chart, company, computer, concentration, connection, corporate, desk, document, electronic, entrepreneur, executive, expertise, holding, indoors, laptop, leadership, lifestyle, male, man, mature adult, mobile phone, new, notebook, occupation, office, paper, paperwork, phone, photo editor, picture, profession, professional, reliability, sitting, smart, smartphone, start, start up, wireless technology, workplace,