Not engineers specifically, but when we were doing cycle promotion roadshows, we found a lot of academics had trouble with the concept of fun.
We had various bikes for people to try out, to show them how much variety there was, and that there was a bike for every kind of ride and rider - mainly to encourage utility use and commuting and so on. But we also had fun stuff. Micro bikes, bikes with eccentrically spoked wheels, stuff to just play on. And whenever we were doing a gig at a University, some academic would stroll up and ask "And what's the point of that one" (or if they were very academic, 'rationale'). "oh, just fun" we'd say, and a fair few would just look bewildered...
Not all of course, we had plenty of professors trying out the microbikes and having a whale of a time. But kids, and members of the public seemed more able to just go "Hey, cool!" and throw themselves into it.