To #4 and #5:
(4) The very existence of any laws of physics. Why should there BE any? Why should the universe "remember" the degree of gravitational force, from one moment to the next? This, precisely, is why Einstein believed in God.
But of course, in any universe that DOES exist there must be some physical laws. Without them there is, well, chaos. In this universe, the one we can observe and attempt to measure, we see only one set of laws because they are the laws of THIS universe. Of course, the possibilities are endless that other laws may exist other places, if they exist (see below).
Gravity, on the other hand and as we understand it (and I'm pretty sure I have this right), is just a warping, a curvature, of space-time. So without gravity, if I remember the way-out stuff from my readings, then the universe can't curve and it is flat, perfectly so, with objects lo longer "attracted" to each other. The universe doesn't "remember" the gravitational force because there isn't anything to remember. Objects just respond to the warp around them.
There shouldn't necessarily "be" any laws of physics. But were there not, we wouldn't be pondering the issue right now. There is an existential element to it, isn't there. I've long been convinced there is a divine presence, benevolent and giving (as opposed to angry), because there must be one if we want to believe that right and wrong aren't simply relative. Minus that spark and presence then morality is simply a a debating point: Murder the Jews or a huge chunk of the Cambodian population? Why not, if man is the ultimate authority and no greater truth exists. The ripples from such reasoning move outward, like a tsunami, and drown us all. It can not be as that, and more so we should be glad it isn't.
Of course, I'm no theologian.
5) The fine-tuned universe. If the electromagnetic force constant were off by 1 part in quadrillions (?) in either direction, life could not evolve. Steven Hawking remarked, "I think there are clearly religious implications."
Ah, but perhaps life didn't evolve, maybe many times. Alan Guth, an MIT physicist, has suggested that new universes (known as “pocket universes”) are constantly being created, but they cannot be seen from our Universe.
Guth and Robert Jaffe "have showed that universes quite different from ours still have elements similar to carbon, hydrogen, and oxygen, and could therefore evolve life forms quite similar to us, even when the masses of elementary particles called quarks are dramatically altered.
Jaffe and his collaborators felt that this proposed anthropic explanation should be subjected to more careful scrutiny, so they decided to explore whether universes with different physical laws could support life. Unlike most other studies, in which varying only one constant usually produces an inhospitable universe, they examined more than one constant.
Whether life exists elsewhere in our Universe is a longstanding mystery. But for some scientists, there’s another interesting question: could there be life in a universe significantly different from our own?
In work featured in a cover story in Scientific American, Jaffe and colleagues showed that universes quite different from ours still have elements similar to carbon, hydrogen, and oxygen, and could therefore evolve life forms quite similar to us. Even when the masses of the elementary particles are dramatically altered, life may find a way."
Find that stuff here: http://www.dailygalaxy.com/my_weblog/2014/05/other-universes-may-operate...
Over my head,
Keith