The theoretical concept for Tor was originally developed by Paul Syverson for the US navy, the publicly available Tor program that we are using today was implemented by Roger Dingledine sometime after he left the NSA, as well as Nick Mathewson. I don't think that Dingledine thinks that Tor is adequate to prevent the NSA from pwning people, nobody with an in depth understanding of anonymity networks and signals intelligence really thinks that Tor can resist the NSA. I am not worried about the Tor developers. They seem to be very libertarian. I don't think that Dingledine is against liberty, in fact I think he is very strongly in favor of freedom of speech and liberty and freedom. I also think that the NSA is almost entirely focused on preventing terrorism, protecting the cyber infrastructure of the USA, and gathering intelligence on foreign governments and such. The NSA is not a police agency, I am not worried about them. If they wanted to shut down SR then SR wouldn't be here. Our security is no match for the NSA. If the FBI or DEA were capable of pwning SR, I think a lot of us would be in prison right now. That is enough for me to feel as if the NSA is not interested in acting as a police agency. In fact, the NSA has not even shut down any of the major child pornography sites on Tor, or even targeted the child molesters using Tor to post their child abuse images. Targeting drug users or CP users is far from their primary interest, and if doing so has even the slightest chance of compromising their ability to gather intelligence on terrorists or foreign agencies, you can rest assured that they are not going to do anything.