The most influential decision in the history of the summer blockbuster was made by a machine that refused to work.
When production on Jaws began off Martha's Vineyard in May 1974, the plan was simple: show the shark. Production had built three full-size pneumatic sharks — collectively nicknamed "Bruce," after Steven Spielberg's lawyer — at a reported cost of around $250,000 each. They were engineering marvels on paper. Then they met the Atlantic Ocean.
Salt water corroded the internals. The neoprene skin soaked up water and bloated. Hoses burst, platforms sank, and on the very first in-water test, Bruce went straight to the bottom. The production, budgeted at around $4 million for 55 days, ballooned to roughly $9 million and 159 days, and the crew took to calling the film "Flaws."
A 27-year-old director, a broken star, and a schedule in freefall: the exact conditions under which the modern thriller was accidentally invented.
Spielberg's solution was born of pure necessity: if the shark wouldn't work, the shark wouldn't appear. He shot from the shark's point of view, gliding low through the water toward kicking legs. He let yellow barrels — harpooned into the unseen animal — stand in for the predator, so the audience learned to fear floating plastic. And he leaned on John Williams' two-note theme to announce a presence the camera refused to confirm.
The result is that the shark doesn't fully appear until well past the film's midpoint, and the movie is scarier for it. What the audience imagines in that empty water is worse than anything the effects team could build. Hitchcock had preached this gospel for decades; a malfunctioning shark forced a young director to practice it at blockbuster scale.
Jaws opened in June 1975, became the highest-grossing film ever to that point, and invented the summer event movie. Every horror director who has ever kept the monster in the shadows for an extra reel owes a royalty to a corroded pneumatic shark resting at the bottom of the Atlantic.
The lesson from this side of the aisle: constraints aren't the enemy of great filmmaking. Sometimes they're the director.