I knew someone who was younger than a certain person. Let's say person number 1 and person number 2. Person number 1 was younger than person number 2. Well one day, after a long time apart, person number 3 is speaking to person number 1. Person number 1 says that his/her age was 75. Person number 3 is taken aback not thinking that he/she can have reached that age so soon. But person number 1 insists that his/her age is 75. So person number 3 quietly agrees and is a bit bewildered at how fast years can go by. Well, after some time, person number three tries to calculate the years. Person number 3 knows the age of person number 2 by the year of birth of person number 2. Person number 2 is not yet 66. So how could person number 1 be 'older' in age than person number 2 if person number 2 was born before person number 1? Is it the beginnings of dementia?