:
You're saying it's that "3D space *can* be understood without a body"?
Er, false.

http://en.wikipedia.org/wiki/SHRDLU

And SHRDLU can generally recognize whether any obect is "in" any another object - whether a doll is in a box or lying between two walls, whether a box is in another box, whether it's open or lidless, or upside down etc etc.?

"The result was a tremendously successful demonstration of AI. This led other AI researchers to excessive optimism which was soon lost when later systems attempted to deal with more realistic situations with real-world ambiguity and complexity"

"In" "out" etc are supremely open-ended concepts. Do you think SHRDLU understood such concepts? Check out the extensive discussion of "over" in "Women, Fire and Dangerous Objects" and over 180 meanings of the concept, (although I'd take a somewhat different approach). ..unless you prefer "excessive optimism" :)

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agi
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