2018 Feb 18

Weekly Head Voices #132: Potato deadline.

2017 Apr 2

Weekly Head Voices #120: May you live in interesting times.

2016 Jun 24

Weekly Head Voices #108: Gaga.

2015 May 23

What a country!

2014 Jul 16

Weekly Head Voices #77: A South African state of Mindful.

2014 May 31

South Africa, why are you not running Linux?

2013 Dec 14

On leaving the Netherlands

2010 Nov 21

Teaching InfoVis in Stellenbosch