Hevel gives the finest of his flock, and his offering is accepted, but Cain gives inferior produce and his offering is rejected. In the ensuing quarrel, Cain kills Hevel and is condemned to wander the earth. The Torah traces the genealogy of the other children of Adam and Chava, and the descendants of Cain until the birth of Noach. After the death of Sheis, Mankind descends into evil, and Hashem decides that He will blot out Man in a flood which will deluge the world. However, one man, Noach, finds favor with Hashem.
Life is like a film.
When we watch a film, we're not watching a homogeneous whole, we're watching hundreds of individual pictures. When presented with separate images in rapid succession, the brain ceases to discern them as separate images, rather it links them all together. This is called the persistence of vision. Persistence of vision accounts for our failure to notice that a motion picture screen is dark about half the time, and that a television image is just one bright, fast, little dot sweeping the screen. Each frame is shown three times during this period.