Common Time
People often observe that each year of life
seems to pass more quickly than the last.
This appears to be a consequence of the fact
that each passing year becomes an increasingly
smaller fraction of a person's lifetime.

For example, for a one-year old infant,
a period of one year represents an entire lifetime,
while, for a person 80-years old, the same
period of a year occurs as a mere fraction,
or one-eightieth, of ones' lifetime.

With each succeeding year of life,
the period of a year represents
a constantly decreasing portion
of one's lifetime, creating the
perception that life itself
is speeding-up.