Why does time "speed up" as we age?
The reason usually given for the sensation of time going faster is that one year for a ten year old is ten percent of their life. One year of a fifty year old is two percent. The fact that we have memories of our lives supposedly crowds out the remaining available time.
This seems overly simplistic though. Are there other factors at play? What could they possibly be?
This question is in the General Section. Responses must be helpful and on-topic.