Dude you got pwned. Take a break from Bitcointalk for a while. Your reputation is even muddier than the Shadow fanboys.
Yeah. I did get pwned on that point - encryption is a branch of cryptography and it's encryption that he stated was part of cryptocurrencies, not cryptography.
You should really just stop digging. There are some good resources online to learn about cryptography if you are actually interested, including a free course from Stanford. Otherwise, continuing to write nonsense about it you are just making yourself look stupid (which I don't think you are generally, but not particularly well informed about this topic).