Measurement vs Modelling

Wed 19 November 2008 by Jim Purbrick

I’ve just been at a really interesting cafe scientifique in Brighton where Philip ‘Critical Mass’ Ball talked about using physics to model the behavior of people en mass. When modeling people as particles you can create surprisingly realistic simulations of real behavior in corridors, traffic jams and panics. As ...

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Music Again!

Mon 12 January 2009 by Jim Purbrick

Since moving to Brighton 18 months ago I’ve been pretty busy finding my feet, moving house twice, sorting out schools and setting up Linden Lab Brighton, so I haven’t had as much time to make music as I’d have liked. It hasn’t helped that my brother ...

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New Widgets

Tue 25 November 2008 by Jim Purbrick

It’s that time of year again where people start asking what I’d like for Christmas and I start wondering what they’d like in return. It’s just the sort of problem that should be solved with social software. Over the last few years I’ve had an ...

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One Universe, Many Scales

Thu 10 January 2013 by Jim Purbrick

One epic meta-game design I first remember talking about a decade ago while working on Warhammer Online is the multi-scale online game: a system of interconnected games in which you choose to be a solo operative, work in a small group, or command epic forces or huge space fleets and ...

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An Open Source, Guitar Mounted, Multi Touch, Wireless, OSC Interface for Ableton Live

Thu 17 December 2009 by Jim Purbrick

Guitar mounted iPhone controller

(100 robots images by Steve Marshall )

Ever since playing with iPhones as music interfaces with the London Community iPhone OSCestra at Open Hack London in May I’ve been wondering how I could use my iPhone as a controller in my rock/electronic band 100 robots. The 100 robots set ...

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Organisational Structures

Thu 20 March 2014 by Jim Purbrick

There have been a number of blog posts recently about exciting new organisational structures. As Cory points out “Every early stage company thinks it has reinvented management”: a very dangerous belief when betting on a new organisational structure can be much riskier than betting on the wrong product.

It starts ...

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Osprey Therian

Sun 15 December 2013 by Jim Purbrick

In mid-2004 I first started exploring Second Life. Version 1.4 had just been released and Philip Rosedale had said in the press release “My fantasy is to be Uma Thurman in Kill Bill, and now I can. I’d pay $10 for her yellow jumpsuit and sword moves and ...

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Parse By The Sea

Sat 19 October 2013 by Jim Purbrick

#parsebythesea

A few weeks ago Facebook London hosted the Parse By The Sea hackathon at the Brighton Dome as part of the Brighton Digital Festival. The idea was to take one of our internal hackathons on the road and invite members of the public to join us, turning a hackathon in ...

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ReactVR Redux Revisited

Tue 04 July 2017 by Jim Purbrick

There were a couple of aspects of my previous experiments building networked ReactVR experiences with Redux that were unsatisfactory: there wasn’t a clean separation between the application logic and network code and, while the example exploited idempotency to reduce latency for some actions, actions which could generate conflicts used ...

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#recordstoreday

Fri 15 April 2016 by Jim Purbrick

StoryBirdAlbum

3 weeks ago I spent a few hours with photoshop working on the Story Bird logo that Linda made a while ago to make it suitable for print. 2 weeks ago I spent a few hours researching the best way to convert the 24 bit 48 Khz Story Bird mixes ...

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Replaying Replicated Redux

Fri 10 November 2017 by Jim Purbrick

While property based tests proved to be a powerful tool for finding and fixing problems with ReactVR pairs, the limitations of the simplistic clientPredictionConstistenty mechanism remained.

It’s easy to think of applications where one order of a sequence of actions is valid, but another order is invalid. Imagine an ...

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@scalecamp

Mon 07 December 2009 by Jim Purbrick

On Friday I jumped on the train to London to attend the first scalecampuk, an unconference about scalability, at the Guardian offices.

The sessions were all very interesting and mostly very relevant. I learned new things about XSS and CSRF and Django’s defences against them from Simon Willison, new ...

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Like Second Life

Thu 23 October 2008 by Jim Purbrick

Was without a doubt the phrase I heard most often yesterday, especially if you include variants like “Not Like Second Life”, “A bit like Second Life” and “Unlike Second Life”. Whatever else it’s achieved, Second Life has definitely become the frame of reference for the small and somewhat myopic ...

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Sharing Carbon Goggles Visualisations

Tue 08 July 2008 by Jim Purbrick

Second Life has benefited greatly from growing in popularity alongside video sharing services. Many people’s first glimpse of Second Life or a particular Second Life experience is through the lens of a YouTube video. When promoting real world brands in Second Life, videos of the Second Life experience that ...

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Some Games Never Die

Mon 02 August 2010 by Jim Purbrick

Law screenshot

While goofing around asking UK indie game developers for their top 5 games of all time at World of Love, I was very pleased to hear that the amazing ZX spectrum strategy game Chaos featured in multiple lists.

I love Chaos so much that I developed Law, a Chaos remake ...

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Spawning Django Blogs

Mon 18 October 2010 by Jim Purbrick

Since leaving Linden Lab I have been talking to a number of people about doing freelance consulting and development work while I get my start-up off the ground and last week got round to setting up a UK limited company so that people will actually be able to pay me ...

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Strange Tales From Other Worlds

Tue 10 May 2016 by Jim Purbrick

At the end of last year, Michael Brunton-Spall and Jon Topper asked me if I would like to give the opening keynote at Scale Summit as I had “lots of experience scaling weird things”, by which they meant Second Life and EVE Online. I immediately thought of The Corn Field ...

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Super Hyperpolyglot

Sat 05 May 2012 by Jim Purbrick

A few years ago nearly all the code I wrote was in C++, but increasingly I’m finding myself writing in a variety of mostly C-style languages and having to perform crunching mental gear changes as I switch between them.

In the interests of making these language switches less painful ...

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Testing Replicated Redux

Mon 31 July 2017 by Jim Purbrick

Opening a couple of browser windows and clicking around was more than sufficient for testing the initial version of ReactVR pairs. Implementing a simple middleware to log actions took advantage of the Redux approach of reifying events to allow a glance at the console to reveal precisely which sequence of ...

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Towards A Generic Media Type System

Sun 17 April 2016 by Jim Purbrick

The early days of RESTful hypermedia API design tends to involve lots of homogeneous collections. In the case of CREST vnd.ccp.eve.Api-v1 pointed to the logged in vnd.ccp.eve.ccp.Capsuleer-v1 which pointed to a vnd.eve.ccp.CharacterCollection-v1 of contacts which pointed to many vnd.ccp ...

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