Consider the question. Do quadragenarian's have little memory capacity?
What is the step-by-step reasoning process to arrive at the answer: no?
Quadragenarians are people that are in their 40s. As people age, their memory can get worse. Half of people over age 50 have mild to severe memory loss. Ken Jennings was 46 years old when he won Jeopardy! The Greatest of All Time tournament.