Please remember I am a newbie......

My question is: what is the effect of removing billions of crude oil from the earth's inner sanctum?
what supports the surface? why not an implosion? and why are earthquakes not the result in plates shifting?

my other simplistic ? when you open an outside door, does the heated inside air leave or does the cold air enter.........I have a debate going on with this..............cold air I know comes in thru wall outlets.but what is the answer?
Cleo

I think I understand the endless midpoint dilemma of Zeno.
Some sums of infinitesmals finish with a small finite solution.
Even though there are an infinity of midpoints between one runner and
the one in front of him it is still possible for the lead runner to be
passed because the infinity of half way lengths add up to a finite
runner separation. This separation is eliminated by the chase runner
who crosses an infinity of separation midpoints.
Perhaps the same slicing of runner gaps can be applied to food.
If I have one pizza and divide it into an endless number of
slices I don't suddenly have more food than I can finish.