Twitter and synchrony

We can use billions of public Tweets to detect events and visualize the synchrony they generate at a large scale. Tweets about sunsets spike when there’s a sunset. We can use this pattern of Tweets to visualize how the time when the sun sets differs by season, as well as to compare how these lines …

Why Game Developers Should Care About HTML5

Slides (with notes) of a talk I gave at the SEGAN Conference in Tallinn, Estonia a few weeks ago. The talk consisted of two parts: the actual talk, and a demonstration. The talk was handled by me, the demonstration by my colleague Rogier. These slides are not available anymore. Please see this updated version of …

Why are software development task estimations regularly off by a factor of 2-3?

A “How Long Is the Coast of Britain?” alike answer to estimating how long software development will take. Let’s take a hike on the coast from San Francisco to Los Angeles to visit our friends in Newport Beach. The line is about 400 miles long; we can walk 4 miles per hour for 10 hours …

Bob Burnquist’s “Dreamland”

You’ve seen skateboarding videos, but you haven’t seen anything like Bob Burnquist’s Dreamland. One of the best skateboarders in the world, Burnquist built a skateboarding mega-ramp in his backyard in Southern California. Now, he released an 8:30-minute video in which he defies gravity with a variety of crazy tricks, some of them including a helicopter …

3D Sound from ordinary laptop speakers

Edgar Choueiri, a professor of mechanical and aerospace engineering at Princeton University, has developed a way to play true three-dimensional sound recordings over regular loudspeakers, such as those found in televisions and computer laptops. The filter is designed to work with loudspeakers – not headphones – and can be experienced through standard computer speakers. (Make …