http://advising.psu.edu/students-entering-majors-spring-2015
Yeah changing majors is fine, but you cannot change into a major that is under enrollment control. You have to choose that major during your sophomore year.
What do I dream of doing…I have no idea, which is why it is so hard for me to pick a major. Certain aspects of IE seem cool, I love problem solving. I also loved to build things in my youth (flow gardens, dirt jumps, retaining walls, and I liked to fix the structural things around the house). Although all of these projects were done using trial and error, no math was involved.