Analysts' estimates vary widely? 98% of them are wrong? HOW CAN THIS BE? Oh, right, because they're analysts and are worse at predicting the future than the average, uneducated person. Or monkeys throwing darts.
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S stands for speed. Just like "i" stood for "Internet" in the original iMac. I don't know why you, and people like you insist on making the S stand for a bunch of other dumb ****, but it's old, tired, and it isn't clever.
S stands for speed. Period. It's a speed bump with random, insignificant extra features thrown in as Apple sees fit.