Question Author
Berners-Lee is making two quite simple, powerful points here. Firstly, gathering intelligence in the way the security services - of whatever stripe - have done is practically counter productive and leaves us, individually and collectively, vulnerable:
//He said the agencies' decision to break the encryption software was appalling and foolish, as it directly contradicted efforts of the US and UK governments to fight cybercrime and cyberwarfare which they have identified as a national security priority//
Secondly, those checks and balances we already have in place are not working:
//We need powerful agencies to combat criminal activity online – but any powerful agency needs checks and balances and, based on recent revelations, it seems the current system of checks and balances has failed//
As he knows a lot more about the internet than I do, I'm prepared to accept his first point. And I don't get a sense from watching this afternoon's SIC hearing anyone's too keen to have a discussion about his second.