The designers of the World Trade Center might have known there were flaws in the design (before, during or after construction) that could lead catastrophic failure. They kept silent and crossed their fingers.
The construction crews may have taken shortcuts to save money.
The construction crews might have made mistakes due to incompetence.
The suppliers of materials might have substituted substandard materials in attempt to cut costs.
As a reminder, the builders of the Titanic touted it as impossible to sink. Oh wait! Hey, what if the sinking of the Titanic was actually a plot to start WWI? Just think about it for a moment…… Maybe it wasn’t an iceberg after all. Maybe it was a German torpedo. Or maybe someone planted explosives in the hull because they knew there would be expensive art and jewels on board and they wanted to collect the insurance. Or maybe aliens had a hidden city under the Titanic’s path and they didn’t want this huge ship passing over all the time.
