Is it possible to allow sideloading *and* keep users safe?

In which I attempt to be pragmatic. Are you allowed to run whatever computer program you want on the hardware you own? This is a question where freedom, practicality, and reality all collide into a mess. Google has recently announced that Android users will only be able to install apps which have been digitally signed by developers who have registered their name and other legal details with Google. To many people, this signals the death of “sideloading” – the ability to install apps which don’t originate on the official store0. I’m a fully paid-up member of the Cory Doctorow fanclub. Back in 2011, he gave a speech called “The Coming War on General Computation”. In it, he rails against the idea that our computers could become traitorous; serving the needs of someone other than their…