[GOPJ]

1. Define the “correct” temperature range for the planet. 2. Define the “correct” humidity range for the planet. 3. Define the “correct” mean sea level for the planet’ 4. Define the “correct” amount of precipitation for the planet. 5. Define the “correct” makeup of the atmosphere. 6. Define the “correct” amount of sea ice at the N/S poles. 7. Define/explain past glaciation and subsequent warming without any input from humans.

My guess - since we're living within a self correcting system - is the correct answer would vary with time...

Apropo nothing, what's the 'correct' weight for a human?? (for the sake of argument we'll pretend age and height don't matter ...) Oh - and great list rkman.

[rktman]

I have no doubt the extremely intelligent FReepers could add many more “un-answerable” questions to the list.