Mathematica 6 Launched
Ed Pegg writes "Wolfram Research has just released Mathematica 6. That link, in addition to the usual 'dramatic breakthrough' material, has an amazing flash banner that simultaneously shows a thousand mathematical demonstrations all at once. The animations came from the Wolfram Demonstrations Project, a free service with 1200+ dynamically interactive examples of math, science, and physics, all with code. For the product itself, much is new or improved, with built-in math databases, improved visualizations, and more."
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You got modded troll because you weren't just asking for clarity. You were asking a rhetorical question meant to imply that an OSS version would be no better. Even though the answers to your question were clearly obvious in the OP.
1.The liscensing. Everyone got that. And that alone is a big enough reason to prefer an OSS version seeing as how he spent more time getting it sorted than doing the actual calculation
2.The performance on Linux. If it were OSS, he wouldn't have had to fix the problems himself, the support for it on Linux would have already been better.