From Mr Karl Fogel.

Sir, Richard Epstein (”Why open source is unsustainable”, October 21) writes as someone who has noticed the open source movement but not yet really understood it. He claims that “open source software relies on the very private property regime” that its supporters disdain, and that a popular open source licence supplies “an all-enveloping ownership structure in which a central committee decides whether to incorporate changes into the basic public program.”