I'm reading a book called "The Goldilocks Enigma" by Paul Davies. It discusses why it is that the universe seems to be so finely tuned to life. It explains all the 'coincidences' that have turned up in cosmology and quantum physics, the constants that we experience such as the strength of gravity, the size of protons, the power of the electromagnetic force, etc, and describes what would happen if they were slightly different.
The book has pointed out the one glaring exception to the "principle of mediocrity" that says the universe is pretty much the same wherever you look: the exception being that we are here and we have never yet observed intelligent life elsewhere! Why should that be? It continued by covering in detail the theory of multiple pocket universes, perhaps an infinite number of them, creating a collective multiverse. I am just coming on to the part about simulated universes and whether we would even know if we were in a simulation. All this i find very fascinating.
One thing made me stop and think this morning. It was just a little aside to another point the author was making. I'll quote the context and bold up the bit that interested me the most.
While the simulation argument was restricted to a single universe, it was always possible to wriggle out of the uncomfortable conclusion that this might be a simulation by arguing that no civilizations are likely to reach the point of achieving such stupendous computational power. For example, there are many reasons why humanity may not survive for more than a few centuries beyond the present, and that may not be long enough for conscious computers to be developed. If a similar fate were to befall any other intelligent beings who might be located elsewhere in the universe, then simulations, while still a possibility in principle, might never be achieved in practice.
Paul Davies, The Goldilocks Enigma, page 208.
There it is. Just a little snippet with no elaboration. Just a cold hint that our species might not be around for very much longer. A footnote references "Our Final Century" by Martin Rees. I think i should read that book soon!
The reason it caught my attention is that i have been thinking for a while that we might be heading for an early demise. A point made in "Conversations With God" is that our technological advances have now exceeded our sociological development. We have the ability to annihilate our entire species (and many of the others) if we misuse our technology. The scary thing is, all it takes is a few wrong decisions by a minority of people with great influence. Look at the Iraq war. I was one of 36 million people[citation] who protested against it before the war began. It did no good. We couldn't change the minds of the people who decided it would happen.
If it's not a devestating war it'll be run-away climate change, or over-population leading to world hunger, or an asteroid will hit the planet and wipe us out. In the long-term i think the only way to ensure the prolonged survival of our species is to spread ourselves out across other planets in the galaxy. Of course, eventually we would have to do that anyway: in 5 billion years time the sun will run out of fuel. But how soon can we start migrating to different planets? Current estimates suggest not very soon at all!
This is the first hint i've come across that says our time left could be measured in centuries. In "Stardust", Stephen Welch says that the average life-span of a land-based species is 5 million years. We humans have only been around for the last 200,000 years. It's a terribly young age for a species to die!
But if we are wiped out, what happens next? I believe that life will go on in some form. Life is very resilient, once started, it's very hard to kill it. No matter what happens to the planet, even if we can't survive, something will. But then what of all our culture, our literature, our art, our technology? Everything that we've produced will eventually fade and crumble without us here to preserve it. Does that matter? Wouldn't it be a shame if another intelligent species were to come to our planet in a million years' time and find no trace of our existence?
What are we really trying to achieve here, anyway? I mean really long-term. Eventually our entire universe will freeze out as the last stars extinguish all the available fuel. We know that the human race cannot survive indefinitely, at least, not unless we can figure out a way to jump to a different universe, all of which (if they exist at all) are probably receding from us faster than the speed of light! Even if we put our consciousness into a simulated reality, it cannot outlast the life of the universe. Everything needs energy, and the second law of thermodynamics will be our ultimate downfall. "The Last Question" by Isaac Asimov, written in 1956, makes this point profoundly. It's a good read; i enjoyed it recently.
Ah, where am i going with this? I know we as a species won't last forever, I don't want our entire existence to be meaningless in the end but i can't work out what it would take to make it meaningful on a cosmic scale. I think that a few hundred years is not a long time for homo sapiens to have left, and i hope we can get past our selfishness and childishness. I hope that our final end isn't caused by our own silly fault.
Posted: August 18th, 2009
Categories:
books,
cosmology,
greening
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Well done, Earth, you made it all the way round again! The Sinfest strip is a perfect reminder of the same time last year:
January 1st 2008
January 1st 2009
I do really like Sinfest! :)
Today i should probably do a few more chores. I did quite well yesterday considering i was very not in the mood for cleaning. Nye's Top tips for a tidy home were very helpful to me, as was Songbird in finding me some high-energy techno, combined with the MyChores lucky dip feature, and bribing myself with the promise of chocolate biscuits!
I look forward to seeing what happens on MyChores today. In past years, January 1st has been one of the busiest days of the year!
Posted: January 1st, 2009
Categories:
cosmology,
mychores
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Approximately a year ago, you may have wished me a happy 2008. If you did, thank you! I had a pretty awesome year!
Reading back in my blog, it feels like a long year. In fact, i noticed a stark contrast between the two halves of the year, pivoting on the moment i got my new job. I was amazed by how much of a difference it made in my perception: the first half of the year feels much longer than a year ago, but everything since my new job feels very recent. Yet the two halves are separated by just one weekend! I also noticed how many more blog posts i made in the earlier half of the year compared to the latter.
So it's new year's eve again, the time when i get all retrospective and nostalgic. I actually quite like staying in on new year's eve and blogging. Here is a summary of the year.
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The camera is a total sham when it comes to photographing stars and planets.
Wherever you are tonight, look at the full moon, and have a look for Jupiter too. It is beautiful. I wish i had some good equipment for viewing and photographing such spectacular celestial sights. This is about the best i could do.

Tomorrow i'll try photographing earlier in the evening, when it might come out better.
I'm not the only person who has been photographing Jupiter tonight …! :)
Posted: August 14th, 2008
Categories:
astronomy,
cosmology,
photos
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Komika bildo ke mi ĵus trovis ĉe xkcd:

Mi konfesas, mi ofte scivolas kio estas la efektiva kialo de kordoteorio …
(Sorry i've been in a major Esperanto mood for the last few weeks since i discovered the Esperantists in Second Life! I promised my blog won't go entirely Esperanto!)
Posted: April 22nd, 2008
Categories:
cosmology,
esperanto,
geeky
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There are estimated to be 1022 stars in the entire universe. That's ten thousand billion billion. That number of grains of sand would cover the entire United Kingdom to a depth of several centimetres. Yet a single cube of sugar contains more atoms than stars in the universe!
Science is fascinating! :)
I read it this morning in Antimatter: The Ultimate Mirror by Gordon Fraser.
Posted: February 21st, 2008
Categories:
cosmology,
interesting
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Such a cute Sinfest strip today:
Let's blow ourselves up for an alien to marvel at!
Today i am mostly doing chores, getting ready for a day off tomorrow. We'll be going to London for lunch with a friend, and then to a workshop about Jewish people and their non-Jewish partners.
Last night i was investigating the Universal Life Church. It is a church that was started by Rev Kirby Hensley in 1959 after becoming disappointed with the Pentecostal church. The difference with this church is it accepts absolutely anybody: of any faith or of no faith. All are welcome! Another cool thing: anyone is welcome to become ordained as a minister in the Universal Life Church, simply by asking to be.
I think i might just do that! Okay, it's treated as a joke by many people, but some people take their ministry very seriously. For me, it is just the kind of church that reflects my beliefs: everyone is special, every faith has something great to offer. No particular way is any better than any other way.
Last night just before going to sleep i decided i wanted to read the penultimate chapter of "Tomorrow's God" by Neale Donald Walsch. I did so, and enjoyed it, and had a nice meditation afterwards. I also found a little slip of paper on which i wrote my first two fundamental beliefs which i found within myself a year or two ago. These were not taught to me by anybody … i do not claim they are The Truth, but they are My Truth, found by going within and asking my Soul what i truly believe:
1. I believe that religions are tools … useful ways of finding and connecting to The All In All.
2. I believe that no religion has everything right, except perhaps for one which acknowledges that all religions have something precious to offer.
That one religion that acknowledges all others is the Universal Life Church! I didn't know it then, but i know it now! It seems perfect for me. I can't think of any good reason not to become a minister in the ULC so i think i will do it! :)
Update: I realise that Unitarian Universalism is also an all-encompassing organisation. I'd be happy to be considered a member of that too! :)
Posted: January 12th, 2008
Categories:
amusing,
cosmology,
spirituality
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Here is an email i just sent to my mum. I have just caught a glimpse of something so exciting! It's wacky and crazy, about parallel universes and how we move through them, but i think it actually makes sense! Unless it doesn't. Which entirely depends on which universe you are about to experience yourself in …!!!
In some parallel universes you are about to click the "Read more" link! Are you going to move into one of them?!
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Posted: January 10th, 2008
Categories:
cosmology,
interesting,
spirituality
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Heheh, it felt like Christmas Eve at work today. Most of us are away next week, so it was a very laid back atmosphere. We were meant to be hammering a test system and i kept logging quotes from Scroobius Pip, such as "Thou shalt not make some noise for Detroit" – "Thou shalt not shake it like a Polaroid picture" – "Thou shalt not wish your girlfriend was a freak like me" … what a cool song! :) Upstairs they were making dubious comments about an inflatable sheep! I think they had their Secret Santa today. Someone came down to show us a USB humping dog. Yeah really.
The testing also sparked a reply-to-all war with everyone sending everyone else screenshots of the errors they were getting. It eventually degenerated, as everything on the internet always does, into cat macros. I love abusing the Reply to All button! :) We also had a music war this afternoon as someone started playing Christmas carols out loud on their laptop, and all the rest of us turned up our music to drown it out, much to the disdain of the Accounts department: "Don't you have some software to ship to our customers?!" to which we replied, "They're not having our software until you get the money off them!" haha!
We officially shipped Version 7.2.3 today. Hurrah! It was the first release EVER that i feel we released on time after a thorough regression testing phase. I am very pleased, and i hope our customers like it.
I came home expecting to go straight out for a run but something was up with my ipod. So it took me about an hour to work out how to sync it on Linux. Eventually Songbird did it for me, and i had a good run, even though it was freezing cold and very foggy. I couldn't feel my toes or fingers to begin with, and i actually couldn't wait for the warmup 5 minutes to be over so i could start running! I was even glad that it was uphill to get me warmed up! How things change, hey! :)
I'm afraid once i got back it was quarter past eight so i abandoned any idea of cooking for myself tonight and went to get some chips and a pineapple fritter from the last remaining chippie in England to still do pineapple fritters! Abandoned too is any notion of vacuuming, changing the bedclothes or cleaning the bathroom. Now it is just time to unwind, get packed ready for tomorrow and go enjoy the holiday! Housework can wait: we have a day when we get back before my dad and family come to visit …!
I was very glad to speak to my lovely friend Maribel tonight on Skype. Maribel told me that the theory of parallel universes has been proven! I am very excited about this! We talked about how there are really only two options: one universe or infinite universes. We also discussed the flaw of Occam's Razor. Occam's Razor says that the simplest theory is most likely the correct theory, the point being that one universe is simpler than an infinite number. But Occam's Razor is self-predicting in a way: the simplest theory is that Occam's Razor is always correct. But i don't think it can be.
Maribel is reading The Elegant Universe by Brian Greene. I instantly decided that i need to read that book too!
Oh, one more thing before i finish this long and winding post: Amazon bought the Beedle the Bard book by JK Rowling (for 2 million pounds!!) and has posted in-depth reviews and pictures at www.amazon.com/beedlebard. I am so pleased that it went to someone who wants to share it with as many people as possible! When i have some time i am going to read all the detailed reviews of each tale. They received a lot of praise by the look of it!
Posted: December 21st, 2007
Categories:
amusing,
cosmology,
ct5k,
harry potter,
work
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I saw a shooting star! :D
I persuaded my partner to come out with me; we went to a field nearby where it was much darker and we could see the Milky Way! I pointed out Mars, Orion, Pegasus, Triangulum, Andromeda, the Plough and the North Star. That's about as much as i know at the moment. We saw a very bright star, it seemed to be pulsating and flashing hues of red, green and blue. At first i thought it must be an aeroplane, but it stayed perfectly still, and on consulting maps since we got home it was almost certainly Vega. A very bright star, quite nearby, spinning fast, circled with dust and possibly one or more planets! :D
I am hoping to go out tomorrow evening and watch the very best of the Geminids meteor shower, but i wanted to go out tonight whilst it is so clear, in case it is cloudy tomorrow. I just turned back towards the Plough to get my bearings when i saw it – a meteor shoot straight across, really fast and really small, but no mistaking what it was. Unfortunately it was too quickly gone for my partner to see it too, but i feel really pleased that i saw it! :)
Everyone in Europe must seriously look for shooting stars tomorrow evening at 17:45 GMT. There's going to be like an average of one a minute. You're bound to see some if the sky is clear enough!
Posted: December 13th, 2007
Categories:
astronomy,
cosmology
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