The earlier data points on the graph show low error rates for Safari browsers on Windows.
The article may have benefited from including a larger caveat about only testing one OS, but this seems like an intellectually honest elimination of a confounding variable.
Perhaps intellectually honest, but a weak conclusion nonetheless: in my understanding, getting Safari 5 to run on Windows requires porting parts of Apple's huge, complicated Cocoa framework to Windows. That framework is always changing, and so is the browser-- and they both primarily target OS X. With OS X, Windows, Cocoa, and Safari all moving quite a bit between Safari versions, I would be surprised if it didn't become harder to support Windows as the product grows.
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The earlier data points on the graph show low error rates for Safari browsers on Windows.
The article may have benefited from including a larger caveat about only testing one OS, but this seems like an intellectually honest elimination of a confounding variable.
Perhaps intellectually honest, but a weak conclusion nonetheless: in my understanding, getting Safari 5 to run on Windows requires porting parts of Apple's huge, complicated Cocoa framework to Windows. That framework is always changing, and so is the browser-- and they both primarily target OS X. With OS X, Windows, Cocoa, and Safari all moving quite a bit between Safari versions, I would be surprised if it didn't become harder to support Windows as the product grows.