"Good engineering" refers to the process of designing and creating things or solving problems in a skillful, effective, and reliable manner while considering safety, efficiency, and quality. Full definition
Negative environmental effects can be decreased and controlled through public education, conservation, regulations, and the application of good engineering practices. (sciencedaily.com)
The open / close mechanism is very well engineered too. (theregister.co.uk)
Today they still are, but with better engineering. (keenedodge.net)