Deep Dive: Outside In (1994)
Film Lens

Outside In presents the discovery by mathematician Steve Smale in 1957, which demonstrates that a sphere can be turned inside out through smooth motions and self-intersections. The film uses computer animation to make this complex mathematical concept accessible to viewers with a general interest in mathematics.
The documentary culminates in the introduction of Bill Thurston's 'corrugations' method, which provides a visual and conceptual understanding of the transformation of a sphere. The combination of dialogue and exposition guides the audience through the intricacies of this mathematical phenomenon, emphasizing the beauty and elegance of geometry.
Why Watch
- •See Steve Smale's 1957 sphere discovery come to life.
- •Find out how spheres can be turned inside out.
- •Meet Bill Thurston and his innovative methods.
Did You Know
•Steve Smale made his discovery about spheres in 1957.
•The film has a duration of 22 minutes.
•Bill Thurston introduced the 'corrugations' method in the documentary.
Perfect For
Mathematics enthusiastsGeometry loversEducational film fans