Category: Thoughts


The World is WEIRD! (Part 2)

Are you confused yet?
Quantum mechanics: Schrodinger's cat
If you enjoyed the videos I posted yesterday about relativity, you have (hopefully) been forced to think about some pretty weird stuff. If you didn’t enjoy the videos, you obviously didn’t watch them. Do it!

Luckily, we are only just scratching the surface of the stimulating weirdness that science offers. Yesterday we looked at Einstein’s Relativity. There’s heaps more to dig into in that area, but today we’re going to zoom in to the tiny world of Quantum mechanics (in a very basic way)

Are you made of particles or waves? Can something be both dead and alive at the same time? Why does it ‘pick’ a state when observed?
As with relativity, you’ll never need to understand this – but just imagine how cool and intelligent you could sound at a party. (“Oh yes, but as the concept of superposition tells us…”

These videos give a fun description of some weird quantum stuff (and the cartoon ‘professor’ might just be the weirdest of all).

Particles or waves? (This one gets weirder the further in you get) – 5mins

Is there space at all? -1min

Lastly, can a cat be both dead and alive at the same time?

“Schrödinger’s cat” is a kind of thought experiment. Imagine a cat is locked in a box (vegetarians: its ok, we’re just pretending) with a vial of acid and a radioactive atom. When the radioactive atom decays, it triggers a hammer that smashes the vial of acid – killing the cat.
The trick is this: when the atom decays is purely random. Say you left the box for an hour. When you came back, there would be a chance that the cat is dead, and a chance that it is still alive.
But according to quantum mechanics, the atom (until it is observed) has both decayed and not decayed. If you watched the first video above, this is like the electron passing through both slits.
So, until you open the box, the cat is both dead and alive. (more info)

Food for thought: To someone outside the room, even after the box has been opened, the whole room contains a cat that is both dead and alive. What about someone unaware of this person? When would this end? (Something omniscient?)

If you have some ‘dead time’ today (sitting on a bus, waiting for a friend, in the elevator of a very, very tall building), these could be interesting  things to throw around in your head.

The world is weird!
What is the weirdest thing about the world you can think of?

The World is WEIRD! (Part 1)

Don’t get too comfortable: the world is weird!

Two things that happen at the same time… happen at the same time, right?
Wrong (according to Einstein and most scientists today).
And if I drive past you, I see your time moving more slowly than mine… but you see my time flowing more slowly! What?

You will never need to understand Relativity. But if you enjoy trying to wrap your head around mind-blowing, confusing, and weird stuff, (and even if you don’t), then try to understand these:

Simultaneity:
 

Time:

If these have whet your appetite and you want to dig deeper into even weirder stuff, this site does a great job of explaining it. But keep this in mind:

Before leading an expedition to prove Einstein’s General Relativity, the physicist Sir Arthur Edington was asked “Is it true that only three people in the world understand relativity?”

Eddington reportedly responded, “Who’s the third?”

The world is weird!
What is the weirdest thing about the world you can think of? (Science or otherwise – maybe its your neighbours.)

5 Observations About the World

Old drivers go slow

  1. The faster you need to get somewhere, the older the driver in front will be.
  2. It’s okay to tell a guy “You’ve really packed it on”… but not such a good thing to tell a girl.
  3. Almost everyone who uses the word “rocks”… doesn’t.
  4. The irony of speeding to get to church could only be topped by the awkwardness of explaining this to a cop. (so don’t speed!)
  5. Everything takes 3 times as long as you think it will, except when you allow for this effect – in which case it only takes as long as you thought it would in the first place.

How To Bring Back Summer

Turn thisWith the freezing cold weather this week, is anyone else missing summer?
There was ice on my windscreen on tuesday morning and its been hard to get out of bed or shower. Imagine being able to turn summer on at will.

In winter, the traditional answer “G’day, how’s it going?” changes from “Good, thanks; and you?” to “Pretty tired” or “Bit sick” or “Alright, I suppose.” We get sick, days get shorter and darker, clothing gets more restrictive, and the great outdoors is something we face only in short burst to and from the car. We clearly need chearing up.Someone better at surviving the cold months can write a survival guide: I’m here to tell you how to escape them.

So here are 5 ways to bring back summer:

1. Listen to summer music. For me, Jack Johnson immediately whisks away the weariness of winter. The world seems brighter, more friendly, almost even warmer. What would you listen to in the car on the way to the beach? Put it on the stereo! Maybe for you it’s The Beach Boys or some fast paced jazz.

2. Turn up your car air-con. full blast. When you go for a drive, don’t wear warm clothes: turn the heat up full instead. If you do this properly, you may need to open one or more windows. Soak up the warmth, bath in the sunlight, feel the wind in your hair, and pretend! You’d be surprised at how easy it is to pretend its summer… especially if this is combined with step 1.

3. Eat summer food: milkshakes, fruit, smoothies, and anything else you savour in summer. In winter we tend to drink hot drinks and eat hot, bread-like foods. You can often buy much of the same foods as in summer, so give it a try. Who knows, maybe you’ve just been missing that flavour.

4. Go outside! We often think it will be too cold, but if you pick your time and stay moving you won’t even notice. The more time the better, but especially between 10am and 2pm. Do some exercise to warm up – then you won’t need to wear ‘winter woolies’ either. Getting the blood pumping and some fresh air could just be the energy boost you need.

5. Go to bed earlier. If you complain that the days are too short in winter, but wake up at 7:30am every day, you’ve already missed an hour of daylight! Hit the sack an hour earlier and you’ll find the day stretches on like, well, summer.

Bonus #6: Try to have conversations that aren’t based on how tired everyone is, or how bad the latest bug going around is, or even how cold it is. Its unlikely to make you feel better. There are other things to talk about in winter. Like… like… um….

Do you have any other tricks or suggestions (other than moving to the tropics or waiting for global warming)? Or should I just learn to love the cold?

Read: Its critical!

ThinkI didn’t intend to revisit the topic of books (see here and here), but a great post on the DesiringGod.org blog sparked me off again.
The article is full of reasons to read:

Reading is one of the best ways to develop our minds. It can help us to know God and ourselves, gain vicarious experience, increase our perception and imagination, train our minds to think critically and logically, and teach us self-discipline….. Few of us are a Jonathan Edwards, John Owen, J. I. Packer or John Piper, and we would be wise to learn from them.

Check out the rest of the article for more gold reasons.
I agree with it. READ! And read widely.

But is there a ‘good’ way to read and a ‘bad’ way to read?

As school gets harder, there are more and more ideas to grasp. When you have a question and you’re short on energy, time, and sleep, the easiest option is to open a book (or Google) and find the answer.
You learn, which is great, but I wonder if you also learn a bad habit. I suspect I am learning the ability to think critically.

Christians are often criticised for accepting everything fed by ‘them’ (whoever that is). I would like to think I’m not stupid enough to devote my life to something I haven’t checked out, but perhaps the criticism rings true at least in part. When reading, should we accept everything the author says? I suggest, ideally, no.

The answer isn’t to not read. There must be a balance between being humble (i.e. allowing yourself to learn) and being critical. “Test everything”!

An even more radical idea, something that only occurred to me recently, is to not read straight away. If you have an interest or question, think about it yourself first. (I’m usually too lazy, but I’m working on it.)

Ironically, this idea didn’t occur from my own thinking… but from reading an Einstein quote:

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking. – Albert Einstein

6 Things I Can’t Wait For

Today was the first day of the school term. My last full term ever.

It’s a welcome shock. I realised this week that I’m looking forward to leaving school more and more as it approaches. I don’t know whether this is because the workload and pressure is building up or because, now the end is in sight, I can imagine the world beyond school.

There will be things I will miss about childhood and the schoolyard. There are things I’m afraid of in life ahead. I’m still working out where my life is heading. Yet despite all this, I’m excited! I may blog about some of this later, but at the moment, here are the top 6 things I’m looking forward to:

I can’t wait:
   7. For youth to start again (this Friday)
   6. To see my girlfriend
   5. For this Saturday (my 18th! Yew!)
   4. For school to be over
   3. PHAT 2008
   2. For summer! Bring it on!
   1. “Till He returns, or calls me home” (as the song “In Christ Alone” puts it)Summer is sweet!

What are you waiting for?

PS: 2 gold stars to the first person who can work out what the picture at the top has to do with anything. Don’t hurt yourselves!


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The clean sea breeze of the centuries

Clean Sea Breeze

My last post asked the question “Why read Old Books?

I think we should. I was convinced of this by a far better word-smith than I: C. S. Lewis.
More than 30 years ago he explained why we ought to read Old Books in an introduction to a Very Old Book:
“There is a strange idea abroad that in every subject the ancient books should be read only by the professionals, and that the amateur should content himself with the modern books. … This mistaken preference for the modern books and this shyness of the old ones is nowhere more rampant than in theology”.

(I have extracted my favourite bits. The rest is definitely worth reading (at the link above).)
“Now this seems to me topsy-turvy. Naturally, since I myself am a writer, I do not wish the ordinary reader to read no modern books. But if he must read only the new or only the old, I would advise him to read the old. And I would give him this advice precisely because he is an amateur and therefore much less protected than the expert against the dangers of an exclusive contemporary diet.”

Why?
“Every age has its own outlook. It is specially good at seeing certain truths and specially liable to make certain mistakes. We all, therefore, need the books that will correct the characteristic mistakes of our own period. And that means the old books. All contemporary writers share to some extent the contemporary outlook – even those, like myself, who seem most opposed to it.”

“The only palliative is to keep the clean sea breeze of the centuries blowing through our minds, and this can be done only by reading old books. Not, of course, that there is any magic about the past. People were no cleverer then than they are now; they made as many mistakes as we. But not the same mistakes. They will not flatter us in the errors we are already committing; and their own errors, being now open and palpable, will not endanger us. “

So what do I do?
“It is a good rule, after reading a new book, never to allow yourself another new one till you have read an old one in between. If that is too much for you, you should at least read one old one to every three new ones.”

I wonder how old an Old Book needs to be, to be an Old Book… (Say that 5 times fast)
The irony is that, when I first read (actually, heard) this, I congratulated myself on having just finished a book written 60 years ago – yet that was actually contempory at the time Lewis wrote this.

I want to dig into some stuff from other centuries, but I have no idea where to start. Does anyone have any suggestions? (actual books are more helpful than authors)

Old Books

Old Books

I love reading. I wish I had more time to read because I find books faster than I can read them. New books are published way faster than I can read them: more than 800 are published every day. One every 2 minutes.

Yet recently I have been thinking a lot about Old Books.

Last term I read a lot of C. S. Lewis, whose books, at more than 50 years old, might qualify. They were marvellous! The writing was clear, clever, and challenging; but the best part was that he wrote about things we don’t hear about today.

Then, a few weeks ago, I found a bookshelf in our house with my parents’ Old Books on it, and I’ve been working my way through some of them.

With so many new books appearing, is there any point reading Old Books? 

I will discuss this in the next post, but feel free to share your thoughts.

 

 

When small is big

The tablet

There are plenty of reasons to think the Old Testament is historical. Another one was added yesterday when The British Museum deciphered a 2600-year-old tablet. (worth a read)

The find is small in many ways: the tablet is just 5.5cm wide, it is just some kind of a receipt, and it names a person of small importance. That last reason is, for me, an interesting one. Quoting the article,
“The tablet names a Babylonian officer called Nebo-Sarsekim who, according to Jeremiah 39 was present in 587BC when Nebuchadnezzar “marched against Jerusalem with his whole army and laid siege to it”….
“Finding something like this tablet, where we see a person mentioned in the Bible making an everyday payment to the temple in Babylon and quoting the exact date, is quite extraordinary.” “

If the tablet provided support for an ‘important detail’, like a king or a battle, it would not rule out an author who, inventing a story, used well known facts to beef it up.
But to find a minor official and the date… thats different isn’t it?

“Dr Jursa… yesterday said the British Museum tablet was so well preserved that it took him just a couple of minutes to decipher.”

It’s not the only time archaeology has agreed with the Bible. Does it surprise you?

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