I'm pretty much of the opinion (and I think it is a very minority opinion on this board, esp. regarding this year's deadline trade)that you should judge a trade based on the information that the GM (and you, if you're judging) have at the time of the trade.
So many posters are "waiting to see if we win a championship or not" to gauge the prudence and wisdom of this trade. I guess that is one way to look at it, but I don't agree. Things are rarely this black and white. There are far too many variables to simplify things in such a way.
Trades are usually always gambles to some degree, some more than others. But like anyone who has ever gambled for a living, all the GM can do is weigh all the positives and negatives both short term and long term which he knows at that time and either pull the trigger or put the gun down.
Let's look at one of the most famous or infamous trades in Cs history to illustrate my theory that trades cannot/should not be judged only by results.
In '84 Red traded Finals hero Gerald Henderson to the Sonics. Was this a "good" trade?
First let's look at the results as they occurred and shifted over a time-line.
Based on the "results", many thought that the trade stunk at first because we gave up a very serviceable guard for a complete unknown, and probably not a great draft pick because the Sonics were not that bad in '84.
The Sonics go in the crapper 2 seasons later, and as the season wore on, and they got worse and worse, the "results" of the trade looked better and better, culminating in the #2 pick in the whole draft, and now the trade looked great. We pick Lenny Bias in the '86 draft, so based purely on results, on June 18th, this looked like the heist of the century (the Gasol trade was in the next century).
June 19th changed everything.Lenny blows his heart out with too much blow, and now, based on results, this was the suckiest trade in the history of basketball.
A trade may be prudent and wise and still fail. A trade may be reckless and terribly imprudent and succeed.
Perk may get injured and not play another game for OKC. What does that prove regarding whether this was a wise decision at the time of the trade? He may not have been injured ever again, if he remained in Boston or in OKC. What does that prove? Play out any scenario that you want for Green, Kristic and the first round pick, and again I ask, how does that have any bearing on whether it was a wise decision or not AT THE TIME of the TRADE???