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For questions about "Known Space". It is the name given to the fictional universe and setting where many of Larry Niven's most popular novels take place, including his classic Ringworld.

17 votes
Accepted

What is the "Kzinti Lesson" from Larry Niven's Ringworld?

A reaction drive is a weapon effective in proportion to it's efficiency. The in-universe origin can be traced back to the first contact between Humans and Kzin where (told in "The Warriors") a …
dmckee --- ex-moderator kitten's user avatar
5 votes

In Niven's Known Space, what currency are the Outsiders interested in?

The testimony of the many stories that involve Outsiders and the logical structure of their existence suggests what kinds of payment they would be interested in. If you read enough of the many Known S …
dmckee --- ex-moderator kitten's user avatar
22 votes
Accepted

Why is the indentation for Mars missing from the underside of the Ringworld?

The answer is a major spoiler in and of itself and who the Engineers are/were is another spoiler
dmckee --- ex-moderator kitten's user avatar