One camera, one lens, one theme, one year: one way to be less bad as a photographer.

Why you can’t see the Apollo lunar landing sites from Earth.

Tough and competent.

What sort of people will vote for Trump in 2020, if he lasts that long?

All serious historians agree that the Apollo programme of the 1960s and early 1970s was the highpoint of western civilisation.

Sometime in the middle of 2019, the UK will have a new prime minister. He¹ will have considerable power to control whether, when and how the UK leaves the EU.

An attempt to describe three well-known function calling conventions in terms of bindings.

I find the best way to think about this is to think in terms of bindings, rather than environments or frames, which are simply containers for bindings.

In 1990, Richard Gabriel gave a talk from which Jamie Zawinski later extracted a section called ‘worse is better’ which he distributed widely. It’s strange but, perhaps, interesting, how prescient this idea was.

In June 2017 I argued that people who voted for Trump were racists: I’m very unhappy with that conclusion.