Even if we presume to know how to build an AI, figuring out the Friendly part still seems to be a long way off. Some AI building plans or/and architectures (e.g. evolutionary methods) are also totally useless F-wise, even though they may lead to a general AI.

What we actually need is knowledge about how to build a very specific type of an AI, and unfortunately, it appears that the A(G)I (sub)field with it's "anything that works" attitude isn't going to provide one.