Why do people say that engineering classes are hard and bad grades are expected?

No.12259105 ViewReplyOriginalReport
Hey /sci/ I'm a naïve freshman majoring in MechE. I haven't taken any major specific courses yet of course. I'm wondering why do engineering students complain about how impossible engineering classes are? Are they simply not passable in your experience or is it that they are just very hard? I feel as if the people who complain heavily are those that also complain about weed out classes etc.