Stephen, you’re missing the point. The actions you listed are subjective in description, not in action. A click is a click. A motion is a motion. Whether there’s a thought attached to either is often dependent on experience, capability, disposition, etc. The number of motions, and clicks, are the same. Where the click is made may differ, but there’s no extra motion involved, no extra clicks involved.
How does a menu differ from a tab? Both are collections of actions which are performed with a motion and a click. Both are accessed the same way—movement, select, click.
Put another way:
Closing Tabs With Mouse:
Safari 3.x: Move pointer to tab, click close button (button is always in the same place).
Safari 4.x: Move pointer to tab, click close button (button is always in the same place).
Reorganizing Tabs With Mouse:
Safari 3.x: Move pointer to tab, click, hold, move left or right, release.
Safari 4.x: Move pointer to ‘grabber’ on tab, click, hold, move left or right release.
Note that there are NO extra motions or clicks. It could be said that Safari 4 is more intuitive because of the ‘grabber’ identifier which is not present in Safari 3 (very unintuitive as evidenced by the many Mac users who had no idea tabs existed, or that they could be moved).
Apple seems to have traded the same number of clicks for higher usability, greater visibility, higher productivity (can have more tabs and titles visible in Safari 4.x vs. 3.x).
By the way, hovering for actions is nothing new, though I find the usage in Safari intriguing and useful, and I suspect we’ll see more of it in the future (think of it as hidden tabs of actionable items). Whether it existed in a previous Apple product or not is not even a relevant issue. The mouse didn’t exist in a made-for-the-masses personal computer until Apple’s original Mac. Because it wasn’t there before doesn’t make its absence better. Usability makes it better.
Simply closing a tab shouldn’t require a hover, move, hover, click.
I’m game. How else do you close a tab? Mental telepathy? I just closed a Safari 4 tab. The processes: move mouse to close button, click. The tab disappeared. Same effort as in Safari 3.x. Same time. Same number of clicks. Hover has no bearing except as an intuitive visual cue for the inexperienced.
We can describe them differently all day long, then trivialize the procedures, but it comes down to the same effort.
Safari 4’s tabs, while seemingly different than the predecessor, hence most of the grumbling, work better. Same motions, same clicks, better visual cues (vs. none in Safari 3.x), better arrangement for viewing all tabs in all windows.