G. Mark’s Answer
Sorry to be seemingly evasive, but really, "it depends". It depends on your assignment and the project you're on. But on average, companies and people in general are working on more and more amibitous and complicated projects. It stands to reason that more simple problems have already been solved or at least have a set of known solutions at the ready. With today's internet access, you can likely get a solution for just about any problem in any engineering discipline at all. That being said, people have a knack for raising the bar. That's the essence of free enterprise. To succeed, you have to do something better than the competition. Something cooler, faster, bigger, more efficient. So you'll generally be working with a team much of the time. Your own personal task may be an independent effort, but at some point, you'll most likely be delivering your results with the team. When you start out, you'll probably be given a mentor at the beginning stages of your career and maybe starting out in other positions. In general, you'll find all of these experiences will help you in your day to day tasks and you'll develop camaraderie along the way.