It seems like once you get to the upper levels engineering and physics start to blend together. For example, think of the Large Hadron Collider. The people that worked on the Higgs Boson theory were definitely physicists but what about everything else? Were the people who actually designed the Collider engineers or physicists? How about the system used to detect the presence of the particle? Was that created by physicists, engineers, or computer scientists? All of STEM seems to blend together at the advanced level which makes it hard for me to decide on a major. Can anyone offer some explanations that could help?