Aging of characters in The Simpsons

The aging of characters in The Simpsons has been a subject of common fan debate, the passage of time is clear, but show small, if any, signs of aging, despite openly saying that years have passed. The writers and character designs seem to ignore the issue of aging.

Common Theories

Eternal Youth

One common theory is that, like in many cartoons, the characters never age and are trapped at the age of their first appearance.

Slowed Time

Another common theory is that, because only one half-hour episode airs approximately each week, the flow of time in The Simpsons is considerably slower than in real life. This theory is supported by the apparent, though minimal, growth of the characters, as well as the noted marks of time. However, this causes a problem with episodes such as All's Fair in Oven War, when the kitchen takes 2 years (in the Simpsons-verse) to remodel, but no-one has aged.

Time Evolution

Though the above theories are accpted, they fail to adress the fact that, as the years go by, it becomes apparent that the characters evolve through time. Homer and Marge fell in love in the 1970s in early seasons, and now the 1990s. It may be that as time progresses, the characters present, past and occasionally future selves evolve into consecutive timezones. So if Homer was born in 1963 in 1985, then he was born in 1964 in 1986.