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livejournal Uncategorized

Sleep

I installed the Sleep Cycle iPhone app about a month ago, so I thought it was time for an update.

Let me share some data:

December 25
December 25

December 26
December 26
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livejournal Uncategorized

Lomborg vs. Greenpeace in NRC-Next

Ik vond het leuk om vorige week in de NRC-Next een artikel van Bjorn Lomborg tegen te komen, dat een vertaling is van zijn artikel in The Guardian. Hoewel enigszins overdreven – ik heb sowieso niet zoveel met kinderen – komt zijn betoog erop neer dat de klimaathysterie in wereld schadelijk is voor de moraal van kinderen.

Het is onderdeel van zijn algemene punt dat klimaatverandering teveel geld en aandacht krijgt ten opzichte van andere problemen in de wereld. Dat wil zeggen, als je puur kijkt naar de effectiviteit van geboden oplossingen, zowel qua tijd als geld. Een uur vergaderen over klimaatverandering levert duizenden keren minder geredde levens op dan een uur vergaderen over gezondheidszorg in ontwikkelingslanden. Een miljoen euro in Kyoto is ongeveer net zo effectief als een euro in malariabestrijding* (plus of min een paar ordes van grootte). Ik ben het hier volledig met hem eens, zoals ik al eerder en veel uitgebreider beschreven heb.

Vandaag reageerde Greenpeace op zijn artikel, op een bijzonder voorspelbare manier. Laat ik het even kort analyseren.

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livejournal Uncategorized

GTD vs. 4HWW – and Flow

I just read an interesting and funny blog post that compares two well known – among certain people – productivity systems: Getting Things Done by David Allen and The Four Hour Work Week by Tim Ferriss. I left a comment there that – in all my modesty – I’d like to share with you.

About four years ago I read GTD (Getting Things Done) for the first time. I was very busy – in fact slightly overworked – at the time. The methodology helped me to create an inventory of my “projects” and I used that inventory to start removing stuff.

It’s a fairly complicated system, but so is public transport; once you figure it out it pays. It’s no secret that I really like this book.

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campaign livejournal Uncategorized

Help Sjors get to TED India

I’m going to TED India! My application has been accepted (you have to apply in order to attend) and I’ve booked my flight. Only one minor detail remains: paying for the conference ticket.

I “should” be able to “afford” this conference, since I’m a software engineer in a fairly rich country. So it’s really a cash flow issue; if I could, I would have borrowed the money from my bank and worked for the ticket later.

This is where you come in…

Your donations** will help me go to TED India. In exchange, I offer one hour of my “brain power” to anyone donating $50*. Please send me an email if you wish to use that offer.

Click here to lend your support to: Help Sjors get to TED India and make a donation at www.pledgie.com !

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livejournal Uncategorized

Weight vs. Sleep

I decided to keep track of my weight for a month, as a 30 day trial. I weighed myself first thing every morning on a cheap digital scale.

The result is the blue line in the chart below.

I knew there’d be some variation, but I wanted to figure out what is causing that. My attention was drawn to the sharp peak (73.0) at June 19th and so I looked back into my calendar to see what I was doing around that day.

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livejournal spoorzone

Wat kost dat nou?

Op de Spoorzone Overvecht website heb ik zojuist een artikel geschreven waarin ik probeer uit te zoeken wat nou eigenlijk het kostenplaatje van sloop en nieuwbouw is en hoe dat zich verhoudt tot niks doen.

Wat me vooral opvalt is dat buitengewoon triviale en cruciale informatie niet (of in ieder geval niet makkelijk) te vinden is. Hopelijk komen er hulpzame reacties op.

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livejournal

What if the Romans had Wave?

Let me explain in a non technical way why Google Wave is a breakthrough. I argue that it doesn’t just revolutionarize the concept of email (only a few decades old), it changes the very concept of mail (thousands of years old).

Let’s go back in time and imagine the Romans had Wave. First of all, I argue that they would have called it Arbor, because it makes more sense and because they didn’t like oceans.

But what would it look like?

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livejournal Uncategorized

Scheefwonen

Nu ik opzoek ben naar een baan, is het begrip scheefwonen – in een huis wonen dat te goedkoop is voor je inkomen – ineens weer relevant geworden.Als ik straks een baan heb, ben ik dan een scheefwoner? En is dat erg? Sommige van mijn beste vrienden zijn tenslotte scheefwoners.

Vandaag werd er weer klakkeloos negatief over scheefwoners gesproken in de Zaterdag NRC (23 mei, pagina 4, opiniestuk van Maarten Huygen over krakers). Ook vermoed ik dat mijn ouders sceptisch staan tegenover scheefwonen.

Tijd voor een tegenoffensief dus, want scheefwonen is goed!

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campaign livejournal Uncategorized

Adopt a Star

Back in February I watched Travis Metcalfe’s talk about the Pale Blue Dot project, where you can adopt a star for $10 and sponsor scientific research. And not just any star; the recently launched Kepler satellite is looking for planets around these stars. Now that’s a cheap price to pay for so much fame and glory 🙂

Of course, I wanted to adopt the brightest star available, but this was difficult using the interface available at that time. So I decided to download the list of stars and build my own Ruby on Rails application around it to make this search easier.

It’s located at pale-blue-dot.sprovoost.nl and here’s a preview:

My adopted star
My adopted star

You can search for stars in order of increasing or decreasing brightness and you can choose not to list stars that are already adopted. Each of the stars can viewed in Google Sky Maps, so you can see if you like the looks. You can also search by adopter name.

I just realized that every star now has a URL. Not sure why that is significant, but it’s kind of cool.

One of the features that I’d like to build soon is the possibility of finding available stars near a particular star, so you can adopt a star close to your friends star. To make the sky even more social, I’d like to build a Facebook App around it.

Of course, I don’t have an infinite amount of time to work on this, so any help is greatly appreciated.

You can find the source code here and the issue tracker here.

Also, is there anyone with enough math and programming skills and patience to build a mobile app? Such an app would use the phone’s clock, GPS, accelometer and (optionally) compas to assist in locating the adopted star in the sky.

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Australië livejournal

Melbourne -> Utrecht

Plane from Melbourne to Adelaide, train from to Perth, then plane to Singapore, train to Kuala Lumpur...

All good things come to an end and worse still: you sometimes need to plan that end. I figured I might as well make that end as interesting as possible, so here we go!