What was that flash of light supposed to represent?
We were told that the characters were "moving on." To what? Where? How? and Why?
A wild yet intriguing science article could shed some "light" on the ending.
Scientists at Northwestern University have found that human life begins in bright flash of light as a sperm meets an egg. This flash is caused by a sudden release of zinc when the egg is fertilized which causes light to be seen under the microscope.
The reports state that an explosion of tiny sparks erupts from the egg at the exact moment of conception.
Scientists had seen the phenomenon occur in other animals but it is the first time is has been also shown to happen in humans.
Researchers noticed that some of the eggs burn brighter than others,
showing that they are more likely to produce a healthy baby.
What could be the possible symbols for light? Light is energy in a pure form. Light is a positive influence. Light can be representative of god in many religious contexts. Light can represent life. It could represent a soul. And now science adds conception to the list of possible symbols for life.
When a egg is fertilized, the human DNA of two people merges to create a new life.
Was the fact that both Claire and Sun birthed their children for the second time in the sideways world, a clue that the characters were precursors to conception?
It is possible when the show writers grappled with their big question, what is life and death, that they masked the symbolism too tightly in reality.
Each of us carries the genetic material of our parents. That genetic material is code. Code that creates the complex biochemical factory called the human body. Code that is similar to that of a computer operating system.
Many fans thought LOST was merely a computer video game with the characters being avatars of the players. But instead of looking at the show as an illusion of a video game, look at it as symbolic embodiment of the genetic material of each characters' parents. For example, Jack was not Jack a human being. Jack was the collective code of his father and mother's life, traits, predication, personality, faults, emotions and intelligence. Jack was a double helix compiling his parents data into his own data set just prior to "conception" with another double helix (specifically Kate's ancestry).
Other scientific studies indicate that many people are predisposed for disease, alcoholism, illness or athletic because of genetic disorders hard wired in a person's DNA. Each of the main characters traits and characteristics could represent a genetic pattern for that future human being.
The idea that the sideways church is merely a vessel for the fully developed sperm and egg DNA of ancestors reaching puberty (the waxing and waning of hormones) is an interesting concept. The last flash of bright light in the final episode could have marked the real beginning of the story.