text: 1998 picture but there weren't ever markings on the mesa as revealed in the next picture taken in 2001. So to end this essay, the "Face on Mars" is a mesa, not an alien artifact as many skeptics believe.               The technology to read students emotions isn't a very useful thing. Not everyone wants you to know how they feel when it comes to their emotions. This could be useful to determine pictures and see how they were feeling at the time of the picture. Most people wouldn't want others to know how they feel somedys.