Cordobes, the thing is that there are many different issues here. One issue is wether POB is skilled enough to play the game, or at least fit in our team. Another issue was his worth ethic. Another issue was wether or not he was in shape. Another issue is the role that Ainge envisioned for POB when he decided to sign him. Another issue is the depth at the position.
What many of the "pessimists" did was that they rolled all those issues into one, cocluded that POB was a bust (without even seeing him play), and since they concluded that POB was a bust, then Danny was an utter moron for not getting another center (when we all know that the roster is not finished), and then did the "Sky is Falling" dance.
As far as I know, when Ainge made those comments about the center position he didn't explain in detail what about the position he was worried about. Was he worried about health issues? Was he worried about the depth? Was he only making it known that he plans to sign another center regardless of POB's performance? Was he simply worried about Perk's health? Was he merely expressing his concern with the experience level? Was it a comment based on height in the position? Was he worried about POB just being a crappy player that won't be useful at all? Many chose to believe that it was this last one. It was a baseless assumption. One baseless assumption I would make is, that if we still had PJ Brown (and not POB), Ainge would've still made a comment that he would like to make the center position stronger.
And you also mention "the observer". Fact is that few here are doing actual observing (especially when it comes to POB), and that's the problem. Without doing actual obseving, you can't do much of that "assessment" that you mention. This has been premature judgement central all summer. As I said, I'll just remain quiet on the issue until I actually see this guy play with our team. And even if he ends up being a piece of crap, we still have a LOOONG way to go, and the issues should be dealt with when the time comes.
You mentioned your analysis of Bill Walker, that I liked. But just like that you have to put what you watch into context. For one, in the videos you analyzed you admited that he wasn't in the same shape that Bill Walker has been shown to be in since the summer. That's a huge factor to consider. So you can't always base your opinions on what you have actually observed in the past... you have to put it into context, just as you would put stats into context.
I consider myself a level guy, and I like actual facts to base my opinions on. I've taken a lot of heat because of my observations regarding Rondo and Powe, I'm pretty sure many think I hate the guys, when I actually love them. But facts are facts, but when it comes to POB, very few of these assessments are based on actual facts. Most are based on second hand information and on crappy articles that simply love to ommit things because they always have some agenda and story they want to tell. And fact is, that many of these "facts" people are using may no longer be an issue. And since they are no longer an issue, conclusions drawn from them are simply flawed. For one, how many of here concluded that he would be a bust because of that article about 3 months ago about POB being winded in practice? The verdict, "POB is out of shape, he's a bust". Come on, you don't think that he would be in better shape after 3-4 months of offseason training?
The problem is that people act as if the know, but they don't. In other threads, they might throw POB under "the unknowns" club. But then they act as if the position is a disaster because, they KNOW he's a bust. Doesn't make sense to me. Few, if anyone, here actually know what this guy is actually about. I'll wait and see.
Meh... that generic "pessimists" label doesn't do anything for me. I think we shall get another center before the playoffs, but I also believe the current roster will do during the regular season. The problem, as I see it, it's more about risk: no matter how well POB or BBD do during the regular season, it's hard to predict if they can contribute what we need during the playoffs. If a guy like PJ is available, I see no reason to not grab him. There's simply no need to take more risk than needed. If the youngster are going fine, you can always keep them on the floor.
You make a fair point about context, but I think I have considered it. One always take assumptions - for example, that Posey would stay on the team and that Walker would spend much of the Summer rehabing his injured knee. When analyzing and predicting the development of a player, some things are plausible, some are not so much. But even those that don't look feasible can happen, it's just that the probability is so low that it doesn't merit consideration. Then, there are others that I, as a fan, as someone who doesn't make a living out of basketball, don't have the skills or the knowledge to assess. On those, I opt for being agnostic. When it comes to predict how a player will develop I frequently have no idea. For example, when Posey signed in Nawlins, I was of the opinion that Allen was the better option available to fill that role. Is he going to succeed? I really don't know. He can be great, he can be a disaster. I hope for the first, but I don't understand why should I omit my fears about the second scenario.
What's more important, and that in some way sums up my point, is that
you can't factor hope, your personal wishes, when analyzing a player - or, to phrase it in another way, that the assumptions you work with shall be plausible and realistic. I mean, players don't become magically better when they sign for the Celtics, although we'd all wish that to happen. I become a fan of them, I start having hope they progress more than the norm, but, in the end, they still are what they are.
Again: if you were a Nuggets fan, would you believe that Balkman now has a jump-shot? Personally, I'd wish it was true, but I wouldn't believe till I'd the chance of seeing it with my own eyes because it's not plausible. I see no reason to adopt a different standard when it comes to Celtics players just because I'm a fan of the team. I mean, it's surely not a dangerous thing, and, has I said before, I don't mind it all, but then you have discussions and conversations "wishful thinking based" in opposition to "reality based".
Some players are hard to read. Others are very transparent. O'Bryant deficiencies in the post are, I think, easily to grasp, even by the most casual fan. As you say, facts are facts, and when facts are easily available there's no reason to ignore them.
I fully agree with your approach though: you'll have a hard time finding out an opinion of mine on JR Giddens, simply because I've never seen him playing. But, once again, this has nothing to do with optimism or pessimism. Being skeptical (in the true sense of the word) about the fluff pieces on NBA players, no matter what team they play for, during the pre-season is not pessimism. I'd call it mental sanity.