I think the expected gain from pursuing FAI is less that pursuing other methods. Other methods are less likely to work, but more likely to be implementable.
I assume that by "implementable" you mean that it's an actionable project, that might fail to "work", i.e. deliver the intended result. I don't see how "implementability" is a relevant characteristic. What matters is whether something works, i.e. succeeds. If you think that other methods are less likely to work, how are they of greater expected value? I probably parsed some of your terms incorrectly.
Whether the project reached the desired goal, versus whether that goal will actually work. If Nick and Eliezer both agreed about some design that "this is how you build a FAI", then I expect it will work. However, I don't think it's likely that would happen. It's more likely they will say "this is how you build a proper Oracle AI", but less likely the Oracle will end up being safe.
Suppose you buy the argument that humanity faces both the risk of AI-caused extinction and the opportunity to shape an AI-built utopia. What should we do about that? As Wei Dai asks, "In what direction should we nudge the future, to maximize the chances and impact of a positive intelligence explosion?"
This post serves as a table of contents and an introduction for an ongoing strategic analysis of AI risk and opportunity.
Contents:
Why discuss AI safety strategy?
The main reason to discuss AI safety strategy is, of course, to draw on a wide spectrum of human expertise and processing power to clarify our understanding of the factors at play and the expected value of particular interventions we could invest in: raising awareness of safety concerns, forming a Friendly AI team, differential technological development, investigating AGI confinement methods, and others.
Discussing AI safety strategy is also a challenging exercise in applied rationality. The relevant issues are complex and uncertain, but we need to take advantage of the fact that rationality is faster than science: we can't "try" a bunch of intelligence explosions and see which one works best. We'll have to predict in advance how the future will develop and what we can do about it.
Core readings
Before engaging with this series, I recommend you read at least the following articles:
Example questions
Which strategic questions would we like to answer? Muehlhauser (2011) elaborates on the following questions:
Salamon & Muehlhauser (2013) list several other questions gathered from the participants of a workshop following Singularity Summit 2011, including:
These are the kinds of questions we will be tackling in this series of posts for Less Wrong Discussion, in order to improve our predictions about which direction we can nudge the future to maximize the chances of a positive intelligence explosion.