Ouch, my brain hurts... its been stretched too far...

In the video, in the 'hilberts hotel' section, he speaks of combining infinites.
And this has made me realise that infinity is larger than I previously believed.

Follow this logic...
1> Assume the 'universe' is infinite is size.
2> It therefore has room to contain an infinite number of 'child' universes.
3> These 'child' universes have the room within the 'parent' to not touch each other, seeing as the 'parent' is infinite is size.
4> Each 'child' universe will also have the room within the 'parent' to be infinite in size. So go back to step one for each 'child'.

Thats BIG...

The time since the big bang is actually quite short (if you
use another perspective)

If the universe is 13 billion years old, and life on earth maybe
3 to 4 billion years, then eartly life (right here where we sit) existed
for 30%!! of the WHOLE TIME OF THE UNIVERSE.

Given that, The age of the Universe seeam less impressive to me.

It all depends on your personal interpretation of 'early life'.
(this timescale is pretty rough BTW)

4 billion years ago, the earth was still soft and molten.

3 billion years ago, it has cooled enough for here to be 'oceans'.

2 billion years ago, erarly life was just "slime" that could spread.

1 billion years ago, some of it developed enough to be called 'plants'.

It took till a mere 300 million years ago before the first fish-with-spines appeared.
TO ME, that is "early" life.


I see your point though, we are a young planet in a young universe.
But life here "wasted" much of our 4 billion years.

What if 'life' on another planet didnt waste as much time being slime as we did?

For me the "early slime" is more impressive than the
steps to the "higher" evolution.

Getting life into existance out of lifeless matter at all, even if very primitive, is more impressive than some further DNA changes
that created more complex variations.

(Although life could have originated somehwere else, and
was brought to earth on some comets, beeing much older than earth)

---

Even if life had evolved into high creatures in other places,
they obviously did not get powerful enough so
that we notice them without any problem
(SETI etc)

If there where really some powerful Aliens, they
should have at least send out some sattelites to
serve as beacon, scan or even make contact. (even if they had to fly around forever)
Its not much outh there obviously.

I feel the (mathematically) like HAS evolved to our level or higher elsewhere.

We havent heard from them merely due to the vast distances involved.
The greater the distance, the longer it will take for something as primitive
as 'radio' transmissions to reach each other. Its just too far I think.

Once we get a Faster-Than-Light communications system figured out (IF possible),
then we will start hearing someTHING...

There is many mathematical (using rather simplistic factors) models.
But the biggest unknown is the likelyhood to evolve
from a high animal to a concious smart intelligence.

There was like 150million years time on earth with high
animals, but only some the primates in recent time
got over the level of sniffing on others butts.

To evolve a concious intelligence is
not an automatism as many think of it.
its not even economical for most lifeforms, who
rather spend they energy on beeing faster, smelling better or breeding more.
(The local maximum in the evolitionary search)

I see the human intelligence more of a lucky coincidence
than an evolitionry automatism.

We just have different opinions there then.

To me its a certainty, due to the sheer numbers involved.

There are are monsterously huge numbers of stars, only some of which have planets.
Of that (still) stunningly huge number of planets, only some are capable of supporting life.
Of that remaining amazingly huge number of life support-able planets, only some get lucky enough to form.
Of that remaining vastly huge number of life supporting planets, only some get lucky enough to form higher life-forms.
Of that remaining (still) huge number of planets with higher life, only some get lucky enough not to nuke themselves out of existance.

So seeing as we are starting with billion upon billion upon billions of stars,
near infinate, then intelligent developed life (in my opinion) IS out there somewhere.
But its unlikely we will be close enough to make contact without FTL of some sort...
Think of is as we have evolved on a grain of sand on a beah America,
and other life evolved on a grain of sand on a beach in china....

"lucky coincidence"'s occur often when trialled MANY MANY times...

Nice talk there, funny biologist jokes too .



No matter how I agree with Michael, 18 billion people died over the last 17 thousand years, and 18 billion living people is what we will soon reach. Pretty crowded world .

Its funny that we should ask European students what the sum of all angles in a triangle is...

Seriously I think if Dark matter in empty space accounted for the large majority of energy in the universe then what is to stop the dark matter which is beyond the universe to become the overpowering factor?

Because beyond any universe is more empty space for infinity, if that empty space has mass then gravity would pull everything apart...is this the mechanism of universal expansion?

The amazing discovery was not the universal expansion rather the universal acceleration
Both ordinary matter and dark matter are attractive thus the expansion should slow down after the big bang

The Einstein's equation of general relativiy claims that it would be possible to have also a repulsive gravitational force if you have a negative pressure
Remember when Mr Krauss moved the constant from the left to the right side of the equation

The dark energy can supply a sufficient repulsive force at the condition that it is diffused everywhere ,its density being of course, extremely low .

Consequently vacuum does not exist or even better "vacuum" can not exist
Remember when Mr Krauss showed the computer simulation of the space "grid"

If vacuum exist than quantum physics is wrong but Quantum Physics is right being confirmed by thousand experimets

The dark energy is a direct consequence of the Heisemberg's principle of indetermination and it had been confirmed in Lab, many years after, thanks to the Kasimiri's effect
A few years ago it has been drammatically further confirmed at universal scale


Thus the title " Univere from nothing "