Camera Rolling…
“I remember from a very young age, people would come to the house, usually a young man and a young woman, and they had me taking tests,” David says in the documentary. “I remember the filming more than anything else. … Every single time they came, they filmed.”

Source: Film Inquiry
When the brothers finally got access to the study’s records, they found hours of video from those childhood home visits. “The footage is like a time capsule, measuring these boys’ lives kind of year by year,” director Wardle said. “I think for the brothers, watching the footage for the first time was an incredibly emotional experience. … They’re seeing their whole childhood play out.”