Is this enough of a reason to take up Mechanical Engineering?? I'm going to do an MS in Mechanical Engineering, and so I need to write an SOP )Statement Of Purpose/ Application Essay) for grad school admissions. To be frank, during undergrads, the sole reason I took up mechanical engineering was that it would give me adequate coverage of thermodynamics and how it is applied to everyday life in the form of IC engines etc... I was obsessed with finding out about entropy during high school, because like everyone who has studied thermodynamics, I found that entropy is an apparently strange entity, which behaves counter-intuitively and i wanted to read more about it. Then soon enough, I understood it to a much larger extent when I read about the statistical explanation of the behavior of molecules, and thus why entropy always increases... This deeper understanding also allowed me to explain apparently impossible phenomenon like irreversible de-mixing of two different types of gas molecules is possible when coupled with expansion...which i thought was really cool, and I thought that by studying mech e, I could use the results of statistical studies in real life situations. Anyway, I initially intended to take up Physics, but my parents didn't allow it. My question is that when the grad school application committees read my reason for taking up mechanical engineering, will they think its too naive?? If so, what should I do? Please suggest.