It's good to see this thread devolving into the long-since-overdue primer on things like mathematical logic and grammar. This forum has really needed those things in the guise of posts about the Hall of Fame.
For what it's worth, there may, in some purely logical sense, be a proveable debate about Robert Horry's worthiness as a Hall of Fame inductee. I'm not sure, however, that the existence of such a debate is, standing alone, evidence that any of the arguments for his induction have any merit whatsoever. I suspect that if I were so inclined, I could probably dig up a Hall-of-Fame argument on the net for some player less accomplished than either Robert Horry or Steve Kerr. I suppose that by the logic applied in this thread, I could say that there was some debate about whether that person should be inducted into the Hall-of-Fame and use that thread to counter another poster's sentiment that my player is not a Hall-of-Famer. Of course, that proof would lack any reference to objective reasonableness and would rely entirely on the degree to which I (or any of my readers) consider the argument in my favor to be reasonable at all.
That is, in a long-winded sense, my way of saying that I think any argument suggesting that Robert Horry is a Hall-of-Famer is one that is patently unreasonable. Don't get me wrong -- I respect the out of Robert Horry and find his resume to be impressive. He's certainly made a difference on a series of le teams. To that end, Robert Horry is a wonderful basketball player and certainly one of the more significant figures of the last 15-20 years of NBA play. But, other than his longevity and his propensity to end up with the transcendant players of his era, I'm not sure that there is much to recommend a guy as a Hall-of-Famer when he has never been All-NBA, has never made an All-Star team, has never led his league in any meaningful statistical category, and has career averages that are all, well, about average.
The Lemke example isn't perfect, but it's at least in the ballpark. I'd thnk that Horry's career is a bit more like that of, say, Scott Brosius -- a guy who was a piece to a team that won multiple les and a guy who came up with big hits in playoff situations, but not a guy who anyone would ever consider for the Hall-of-Fame.