Well said haun6!
The essential difference between PE and anything else is responsibility. When the s#*t hits the fan legally, a PE has nowhere to hide whereas everyone else gets to claim or feign innocence, ignorance, non-involvement, etc. Having the inherent responsibility that PE registration imposes changes all of a PE's perspectives regarding all engineering related work and issues.
Don't get me started on real examples of the discrepancies between most professors (even the very best educators) and practical realities!!!!!! Academics can be very valuable members of a team to get something accomplished or developed, but without the practical involvement of practicing PE's silly, if not outright bad, things are likely to be the result.
I have nothing but great respect and gratitude for all but a couple of my professors, but only a very few of them could be trusted to touch a wrench or screwdriver without getting themselves hurt.
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.