No, it's that those expectations were wrong in the first place. I spent a fair amount of time in the early-mid 80's tutoring engineering students in Computer S

No, it's that those expectations were wrong in the first place. I spent a fair amount of time in the early-mid 80's tutoring engineering students in Computer Science (basically a CS101 for non-CS students). A fair number of otherwise very smart people simply couldn't grasp the concepts beyond the very basics.