Ключевые слова: achievement, adult, background, blackboard, brain, brains, brainstorming, business, businessman, cog, concept, confidence, confident, creative, creativity, education, gear, gears, genius, glasses, hamster, head, human, idea, ideas, intelligence, machine, machinery, man, memory, mental, person, personality, problem, psychology, running, solution, solve, student, success, teacher, think, thinking, thinks, thought, thoughts, young,