Here's why:

* Distance: Distance is the total length traveled. It's a scalar quantity, meaning it only has magnitude (size).

* Displacement: Displacement is the overall change in position from the starting point to the ending point. It's a vector quantity, meaning it has both magnitude (size) and direction.

Example:

Imagine walking 5 meters east, then 5 meters west.

* Distance: You walked a total of 10 meters.

* Displacement: Your displacement is 0 meters because you ended up back at your starting point.

Key takeaway: Displacement focuses on the net change in position, considering both how far and in what direction you moved.