Highlights that the second task or event is harder to imagine than the first, already difficult one.

Emphasizing Improbability

Compares two scenarios showing the second is an even worse fit or less appropriate.

Contrast of Suitability

Indicates strong opposition or a lack of preference for the second option.

Shows escalation from a basic fact or action to something more intense or involved.

Used when expressing skepticism about a greater possibility when a lesser one is not met.