And John Gustafson recently stated "The only people who said Amdahl's Law wasn't true were the PR people at Sandia, and a couple of managers who should have known better. Never the people who did the work." Check the video discussion, with Amdahl, Gustafson, and a couple of other folks.

If you see a white horse, it does not imply that all horses are white. If see an algorithm that scales, it does not imply that all algorithms will scale.

Some applications will map to 1000 cores nicely, but not all of them. Thinking Machines, Inmos, MasPar, BBN, and dozens of other companies have found this out the hard way. Intel and AMD also seem intent on finding this out the hard way. Of course, the smart thing to do is to ignore five decades of well documented history, and pretend that this is the first time anyone has tried parallel computing; it's much more fun that way.