The "secret" pattern behind the classic 1970s disaster movies

The biggest 1970s disaster movies correspond directly to the four classical elements.

• Airport (1970): air
• The Poseidon Adventure (1972): water
• The Towering Inferno (1974): fire
• Earthquake (1974): earth

Perhaps Irwin Allen was actually the reincarnation of Empedocles? (Leaving aside the fact that he only made two of the four.)