Just because technology has been rapidly advancing recently doesn't mean it will continue to do so indefinitely. It's possible that innovation will follow an S-curve and eventually level out due to hitting natural limits. (I don't necessarily think that will happen, but we have to acknowledge it as a possibility.)
Technology: I never said anything about the speed of growth. A minimal advancement would still be an improvement.
This makes it only a question of time.
Have you ever thought to consider that we are unable to understand our own brains due to being constrained exactly because of it?!
Advancements in intelligence and technology will push us towards a thorougher scientific understanding of the brain and the mechanics of intelligence itself.
There is no reason to believe that the brain so complex as to be impossible to understand. Not to mention that we may not need to have a completed neuroscience in order to develop some true intelligence (no matter how primitive) that can improve itself.