I was reading A Briefer History of Time by Stephen Hawking and Mlodinow. I found something silly. On page 36 at the bottom, it says the following :
If, say, the sun suddenly disappeared, Maxwell's theory tells us that the earth wouldn't get dark for about another eight minutes (since that is how long it takes light to reach us from the sun) but, according to Newtonian gravity, the earth would immediately cease to feel the sun's attraction and fly out of orbit. The gravitational effect of the disappearance of the sun would thus have reached us with infinite speed, instead of at or below the speed of light, as the special theory of relativity required.
Doesn't Maxwell's theory then also predict that the sun can not suddenly disappear? I mean, it would be like travelling with infinite speed as well. So how is this example falling in place?
Also, at page 58, it says:
Newton, and others, should have realized that a static universe would be unstable, for there is no comparable repulsive force to balance the gravitational pull that all stars and galaxies exert upon each other.
And in his previous book A Brief History of time he had written that Newton realized this flaw and argued that the universe will be stable if there are an infinite amount of stars.
Why this difference (or I should say lie)?