Einstein's Relativity seems to say that, if Mort and Velma are twins and Velma goes on a trip and then returns, Velma will then be younger than Mort and Mort will be younger than Velma. What is wrong with this reasoning?
A) The effects of the theory of relativity cancel out due to Velma's acceleration, so that they are both really the same age when they get back together.
B) The prediction about Velma's observation is not correct, because Velma is accelerated.
C) The prediction about Mort's observation is not correct, because Velma is accelerated.
D) What's wrong with this reasoning is that Albert Einstein was a fool and a hothead.
E) Nothing is wrong with it.

Question

Quizplus · Accepted Answer

The prediction about Velma's observation is not correct because Velma experiences acceleration, which breaks the symmetry of the situation. In the twin paradox, the traveling twin (Velma) undergoes acceleration when turning around to return, which affects her frame of reference and results in her being younger than Mort upon return.

Einstein's Relativity Seems to Say That, If Mort and Velma