Mr. Bennett, that's a fair response.
"But that's just one number in isolation. There are other things to consider. If there had been four Earth-Kzinti wars, you'd think the Kzinti would have been mentioned somewhere else in canon. Basically, the Man-Kzin Wars are such a major part of Known Space history that any attempt to minimize them enough to squeeze them into the gaps of Trek history would be pretty pathetic by comparison. It doesn't seem to serve the concept well to try to change it so much to force it to fit. I'm not a fan of that kind of Procrustean extreme makeover on a concept."
There's a lot of big stuff in
Star Trek that's never mentioned in similar situations that you would think would be. Case in point, throughout TNG/DS9/etc. they always refer to the "five or six" Starships
Enterprise, not accounting for the NX-01. In DS9's "Homefront," Adm. Leyton describes the Dominion as the biggest threat to Earth since World War III, ignoring V'Ger and the whale probe from the movies, the Borg from "Best of Both Worlds," etc. It is very strange, but it is a franchise that was made up as it went along, so it is pretty amazing that it fits together was well as it does (even if you include some or all of TAS). Besides, even through there are hundreds of hours of
Star Trek material, we only see a limited slice from Starfleet's perspective. It could very well be that the Kzin Wars were not that important or any discussions about it were off-screen, like the way that Starfleet officers aren't always comparing skirmishes to the Brush Wars, for example. In fact, the episode seems to assume that the wars were not that big a deal from the humans' perspective; Sulu observes that the Kzinti have always had less advanced technology from Earth and doesn't seem to think the they pose a threat to the Federation until they find the titular weapon.
I'm not saying that the episode fits perfectly, I just think that it can fit and that it's not alone in canonical media where you have to say: "Yeah it's just a TV show, but this's how we could explain the problem." I'm not suggesting putting the Known Space series into
Star Trek either, just the elements that were used in TAS. Besides, so what if the Man/Kzin Wars were not that important in the
Star Trek franchise, but were in the Known Space universe? "The Slaver Weapon" is an adaptation. It's version has nothing to do with source material beyond using the ideas for something knew. Comic book movies do this all the time, like having Peter Parker in love with Mary Jane Watson from the beginning or Iron Man being Ultron's creator. It's not what the source material did, but is legitimate for the new spin they're taking with the story.
"But they fit better in Known Space, where they properly belong. If you like the ideas so much, then why not just read and appreciate Niven's own work and that of the
Man-Kzin Wars authors? That's the real deal. The Trek version is a watered-down imitation. I'd rather let Trek be Trek and let Known Space be Known Space."
I did read
Ringworld once. It was okay. I get your point, but (and this is purely subjective) I'm a Trekkie more than anything else. My first exposure to the Kzinti was in TAS (that's largely what inspired me to read
Ringworld in the first place). So, I like the Kzinti, but the "
Star Trek Kzinti," if that makes any sense. While I liked Speaker-To-Animals in the original novel, it feels like an alternate reality version of something I know elsewhere. Kind of like the reason that I can't get into the J.J. Abrams movies or the post-"One More Day"
Spider-Man material; it may be okay on it's own, but it's so divorced from the stuff that made me love the franchises in the first place that I doesn't really have any meaning to me. The Kzinti are cool in and of themselves, but I don't find it interesting to read about them against a version of Earth I'm not overly connected to, but against the Federation, which I am very interested in, that pulls me in.
Also, purely subjectively on my part, since I was introduced to the Kzinti through
Star Trek, not the original novels, they have always felt like an organic part of the
Star Trek franchise to me. I'm not using these opinions as an argument, just trying to explain my biases about this element and why I prefer things the way I do.
"And there's a giant rubber ducky on the "canonical" ship cutaway in the
Enterprise-D engine room. Just because a graphic is onscreen, that doesn't mean every word and image on it is meant to be canonically binding. It's just background texture. Things like that are often filled with in-jokes by the art department. It means nothing."
TAS references in live-action materials have a precedence for being taken "seriously." Also the ducky and other goofy graphics were hidden as much as possible, so there is a difference between background text that's meant to be seen and stuff we're supposed to ignore; for example, no one's questioning the dates of World War III from "In a Mirror, Darkly, Part II" despite the fact that it's also a background graphic. However, I will concede that this kind of information is
always overwritten by actual dialogue, so the Kzin map alone is just an Easter egg and not enough to be dogmatic about.
"Or maybe Keniclius was just mispronouncing "Xindi"...

"
Yeah, that would be an interesting way to look at it. I'm partial to the theory that the Xendi-Sabu System and Xendi Station 9 from TNG are connected to the Xindi somehow, so I can relate.
"Canon" does not mean "fact." It just means the stories made up by the creators or owners of the series as opposed to the stories made up by tie-in authors or fans. And since canons are made-up stories, their creators often change their minds and disregard elements from earlier parts of the canon...Canon is not, has never been, and never will be a guarantee that every last detail or even every last story is required to be acknowledged."
I looked up definitions of the word "canon." There two ways it's used; One, the list of official and licensed works (like you said" Two, what stuff is considered "real" (which is how I was using it). The second way may not be the original way, but the word has changed to include it's usage. For example, when Disney rebooted the tie-in line for
Star Wars, they distinguished between canon as in material that is counted as "real" (the new stuff) and the old stuff that's official but not real ("Legends"). If
Star Trek had had a "lose" canon (like
Pinky and the Brain), I would probably agree with you. But, since the franchise has been historically "hard," as in we're supposed to see it as everything fitting together, I'm not as fond of the idea that "stuff can just be ignored."
Based on the discussion, I think that you see it as okay to to retcon and ignore stuff if it's better, where I'm someone who prefers the material be set in stone and used as guidelines for the future (within reason, I have no problem that some of the early shows have minor mistakes that can be glossed over). Probably in the end, we looser and tighter canon people need each other; thus great opportunities aren't missed because of the fear of invalidating something trivial, but not so much happy editing that the franchise morphs into something different.