“Every single piece of this film is a puzzle that has to fit together.”

“Every single piece of this film is a puzzle that has to fit together,” said Heimann, who introduced the idea of the cardigan during her first fitting with Grant.

Online tutorials explain how to fit together the pieces into a fully functioning firearm in less than an hour.

The tool helps her understand the scale of the items she’s buying and how they’ll all fit together in her space.

Using cutting-edge computer animation software, they combined the videos with 3D models to visualize how the bird's bone surfaces fit together geometrically and how those joints appeared in motion.