engineer(s) / dream(s) / product(s) / relationship(s) / _ / .

twinkle(s) / difference(s)

structural engineering is the science and art of designing and making, with economy and elegance, buildings, bridges, frameworks and other similar structures so that they can safely resist the force(s) to which they may be subjected.

H. Petroski -- To Engineer is Human

play / physic(s) / math(s) / cycle(s)