[upquark]

I'm not a neuroscientist and may be missing something, but on the surface this seems like a pretty poor argument: citing feasibility as a justification for not going with the (overwhelmingly) simpler organisms first, and going after humans with several orders of magnitude more complex brains. If I were to guess, I'd say that building the unified model of the simplest organisms would be tremendously relevant in helping to model higher-level organisms including humans.