In this movie they took them up in space. They're floating around and doing zero gravity stuff. Well, they had to do it all on wires. All the wires had to be painted black against this black background. If you didn't light it properly you could see the wires. Drove them crazy!
“I sat staring, staring, staring - half lost, learning a new language or rather the same language in a different dialect. So still were the big woods where I sat, sound might not yet have been born.”