All the philosophers, writers, sages who questioned life interpreted the concept of movement according to themselves. For example, the famous philosopher George Berkeley defines existing as being in motion. According to Berkeley, the only factor that allows living things to be accepted alive must be able to move. For another example, Science-Fiction writer William Gibson says ''We see in order to move; we move in order to see.''. So Gibson sees the concept of movement as a tool that people uses to reach his ambitions.