A question often springs: would I do well if I choose something else as my major, and whether it’s possible when I apply for graduate admissions. It is understandable that what one chooses at the age of seventeen may not be right or desirable, as validated by our subsequent experiences. Changing from one major to another is possible, but you have to prove that your new desire is not a changing whim nor a market actuated one. Graduate studies in any field builds on the knowledge that you have acquired at your undergrad school. When what you change is close to the one you are already in, the transition is easy and, importantly, favorably viewed. For instance, moving from any engineering field to Industrial Engineering is seen to be reasonable, because the field is general in nature, and takes in range of students. Likewise, change from Computers to Electronics, and from Mechanical to Aerospace are, for the most part, logical, and would be viewed as a legitimate interest in the new chosen field. But to make a leap into Mechanical Engineering from the field of Computers is far-fetched, unless you have an exposure that corroborates the inclination. We don’t discourage yet, as long as you have a convincing story to tell. We sympathize with the belief that what we do at undergrad school is what software guys call as ‘premature optimization’ – optimizing before the right time, when we have most data in view—in the form of specializing on something before we are fully aware of our strengths, and skills, and where we would like to be. The admissions office, especially in the US, and to lesser extent, in other countries understand it. So feel free to declare a new major, as long as you understand why you do it.