This is a lesson for those out there who may not grasp the logistical nightmare that is "making a movie". The moment you step on set, you're making compromises.
David Fincher blames the rain in "Seven" on El Niño
https://www.avclub.com/david-fincher-blames-the-rain-in-seven-on-el-nino-1851420890
The A.V. Club
David Fincher blames the rain in Seven on El NiñoDavid Fincher says the rain in Seven was more a production necessity, not an artistic choice