Average is not a mathematical fiction, for planets or for any dataset. You're a dingbat each and every day.
To clarify, being unstable and widely ranging does not eliminate the fact that a dataset has an average. It simply changes how you act upon said averages or what you extrapolate from them.
Your point was retarded, or ill communicated at best.
You lack the capacity to understand the point, that's not your fault.
The average temperature of a planet with a high of 650 and a low of -600 is 50 degrees. Does that mean you can walk outside in your tshirt?
Does it mean I can walk outside in my shirt?
Gee, I don't know, maybe what I made large above, for the retards, answers that?
It's not that anyone lacks the capacity to understand what you're TRYING to say, it's that you said it like a jackass.