"Who creates a thing is not as important as what the thing is. Who created baseball? Who created basketball? Who created the space program? Who created - we could go on and on. We could argue about who created something. We all are participants in it."

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You know, the technology was at the right place for us to build this world. The most difficult thing about doing The Croods was no doubt the building of the world. Every single thing in this film is organic. Organic things are tough. Very very labour intensive. And we have no man-made structures. You could argue that everything in this film is really an exterior. Even the interiors of the cave are exteriors. So building this world was the biggest thing of all, and the technology was there to do it.

— Chris Sanders