We must follow the laws of war even against enemies that reject them completely.

Piketty calls for divestment from fossil fuels before the Paris climate conference.

Some web advertisements play inaudible sounds to be picked up by proprietary malware running on other nearby computers so as to determine that they are nearby.

It is unlikely free software will do this, but malware introduced by an attack could do it.

I conclude that access to a microphone needs to be controlled like access to a camera. Applications should need special authorization to use the microphone.

Jeremy Corbin: it would have been far better for us all if Jihadi John had been held to account in a court of law.

I agree. Killing someone proves he was vulnerable. Convicting him in a fair trial proves he did wrong.

I do not think killing him was wrong under the circumstances; there was no feasible way to arrest him. Corbyn did not say it was wrong to kill Jihadi John, but his political enemies are pretending that he did.

By contrast, the US could have arrested and tried Osama bin Laden, so it should have done so rather than kill him.

The FSF's LibrePlanet event, which will be held in March, is looking for people to propose sessions.