Re: Risk vs benefit
I am extremely sceptical that a single terrorist attack would have been prevented if encryption had not been available. Before Blair decided to create a Muslim terrorist threat by invading a virtually unarmed country that was in no way a threat to the UK, it was the Irish that was the big terrorist threat to England. Which is very odd if you believe the nonsense regarding encryption and the need for Internet surveillance, because for the vast majority of the time the IRA were able to carry out their deeds without the Internet or electronic encryption.
Therefore I simply do not believe that banning encryption and having 100% surveillance of the Internet will make any significant difference to the number of terrorist incidents that take place. Once terrorists or other bad guys know that a particular method of communication is unsafe (which has been at least suspected wrt the Internet for decades), they simply use other methods of communication.