Final answer:
Movement through time is the same as movement through space due to the concept of relativity and the behavior of space-time. The perception of time and motion can vary depending on the observer's frame of reference.
Step-by-step explanation:
The question of why movement through time is the same as movement through space is based on the concept of relativity and the behavior of space-time. According to general relativity theory, the stronger the gravity, the slower the pace of time. This implies that the perception of time can vary depending on the observer's frame of reference. Similarly, the perception of motion can also vary depending on the frame of reference. This means that motion through time and motion through space are relative terms and appear differently when viewed from different reference frames.