On a related note, at least in Windows, when triple-clicking to select a paragraph, immediate subsequent clicks (any number) do absolutely nothing.
This really bothers me when selecting words because sometimes I triple-click instead of double-click by accident, and I want to undo this but it requires waiting.
"any UI behavior that requires waiting seems pretty dubious to me..."
Deep down I really agree with that, but I become conflicted when I consider settings with severe limitations that have little else to turn to. For example: the timed hover to select on some Kinect games: touch screens that use longpress as a substitute for right-click; touchscreen keyboards with longpress as a shift-like behavior. It somehow seems regretfully acceptable when dealing with the limitations of a touch screen, single button, or no button environment.
One case where I think it is ok to require waiting are "Ejector seat button next to the radio" type situations where user action could have potentially disastrous consequences: I am glad I have to hold down my power button for some time to force a hardware restart.
This really bothers me when selecting words because sometimes I triple-click instead of double-click by accident, and I want to undo this but it requires waiting.