[chongli]

Bridge building is the purview of civil engineers. Mechanical engineers deal with machines, moving parts and the like.

[sokoloff]

The old engineering chestnut: Mechanical engineers build weapons. Civil engineers build targets.

[chongli]

Love that! Reminds me of playing Civilization games. Sending in my catapults to smash the enemy city to pieces! I always tried to time the discovery of mathematics with transitioning my economy to a war footing!