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If you think about it, the forward button is disabled about 80% of the time -- so it doesn't really need to always be there. The forward button isn't being removed completely; it'll just be hidden when it's not clickable. It will slide out when there's a "forward" URL available.

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Ugh. I hate shapeshifting UIs. Muscle memory depends on stuff being fixed in space relative to other elements.

The only element that would shift is the awesome bar, and that's a pretty big target to miss.

muscle memory is less relevant when mousing. the range of starting positions is large.

I can usually mouse to within a few dozen pixels of my target without looking at the screen, thanks to a combination of muscle memory and spatial sense.

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