If by non-engineers you mean totally untrained people, then no, but that's not what OP mentioned. Many engineers, myself included, believe involving engineering

If by non-engineers you mean totally untrained people, then no, but that's not what OP mentioned. Many engineers, myself included, believe involving engineering technicians/tradespeople/whatever you want to call them in the design process can add a lot of value. I work on high-power electrical equipment and I find the input of qualified electricians and utility tradespeople invaluable. In fact, many jobs that are done by professional engineers can quite easily be done by certified tradespeople or even non-technical people. OP does not suggest that nurses should do open heart surgery (the medical equivalent, perhaps, of designing an airplane). It would not unreasonable to have non-engineers do many of the project management tasks typically done by engineers in large corporations, or to have tradespeople do detailed design work in their areas of expertise.