This history is a very detailed and focused one and I really love the way most information is documented with links. It is a very useful source of primary and secondary documents. It is centred on PGP as a multiform software and tracks all its versions, the people behind them, and the place where they are published. In this sense, it is very complete, but I lack a broaden contextualization. Who are the people that made this history? Why and how did they act as they did? While a recent history of this kind was much more critical and one-sided, this one seems very neutral and objective (in the sense 'based on objects and facts'). But the history is not as flat as this. What about the competition between versions, the tensions between programmers?