Ключевые слова: age, agility, aging, alzheimers, amnesia, analyze, brain, brainstorm, cognitive, contemplate, decision, degeneration, difference, disease, elderly, experience, expertise, fluid cognitive ability, function, geriatrics, guy, idea, iq test, knowledge, light bulb, long term, longevity, male, memory, mental, mental agility, mind, old, older, pensive, people, person, pondering, problem, process, psychology, rethink, senior, short term, skills, solution, test, thought, wisdom, young,