Final answer:
An observation-type elevator system has two primary benefits: weight reduction/increase and the illustration of physics concepts through the example given by Albert Einstein.
Step-by-step explanation:
Two primary benefits of an observation-type elevator system are:
Weight reduction/Increase: In a high-speed elevator, when it accelerates from a stop to a rapid descent, your weight seems to be reduced.
Similarly, your weight seems to increase in an elevator that starts to move quickly upward. This effect can be measured by standing on a scale inside the elevator.
Illustration of Physics Concepts: Einstein used the elevator example to illustrate the concept of weight and acceleration.
It helps to understand the relation between motion, forces, and the perception of weight.