The number of science fiction writers who have posited a form of external brain storage, external interface, neural net that replaces your biological brain when it starts to die off at age 30 (unfortunate but true fact, there) etc., is immense.
The number of working computer models we have of an entire brain, which would enable this, is, um... 0. But give it time, give it time.
We've made the first step.
I can not stress enough how extremely cool I think this is. What they haven't said here is how far this will go towards diagnosing and treating deficits resulting from neurological injury, which is my current professional interest in the matter.
We'll get there, we'll get there.