Hey, the whole thing would be fine if it wasn't for Alpha Centauri B causing instability issues in Alpha Centauri A's habitable zone... :uhh:
But they were totally ridiculous. Not plausible speculative biology at all.
They're just tall, thin humans with blue skin, catlike facial features, a tail, and a neural tentacle thing. Almost like old style aliens, they could almost be humans with prosthetics (and indeed they are, but they're full-body, computer generated prosthetics for human actors).
There are an infinite number of paths that evolution can take, the human form is but one of them. Already evolve a species of dinosaur that has intellect comparable to a human, and it will look nothing like a human (and no, I'm not talking about the green-skinned 'dinoman' reptoid, I'm talking about a dinosaur with human intellect- it'd probably look more like a big-headed hornbill with arms instead of wings). And this dinosauroid is inexorably more related to a human than an alien organism would be, indeed, the alien organism isn't related to humans at all. The dinosauroid actually shares the most basic traits with humans, but an alien creature need not share any (well, it will likely have analogous structures, but they do not have to be the same or even similar).
District 9's prawns still had the basic form of a human, but they looked- and were animated- like they were true aliens, not humans with stuff stuck onto them. Even in an era where near-photoreal evolutionarily plausible aliens can be created, we are still stuck with... Blue Catpeople. And this leaves the majority of people with the silly notion that everything out there that speaks or thinks or makes cave-paintings, will look at least something like a human. But in reality, something that looks only very vaguely like a human would be a spectacular find, and an entirely convergent evolutionary path so as to look exactly (or nearly, as is the case with something like the Na'vi) like humans, would be so improbable so as to not show up again in the entire universe.
And the "people aren't able to have empathy with a non-humanoid character" is also not
entirely true, as it is the point of many nature documentaries, as well as cartoons featuring anthropomorphic animals, to create empathy between the audience and a non-human character. Granted, Avatar is a special case, as the story would have not worked at
all if the Na'vi didn't look human.
But the most, most annoying thing of all, is that the Na'vi are not only an example of the same old trope of the humanesque organism, but they don't even fit in with the rest of the life on their planet, itself rather well done despite some of the more outlandish concepts and hollywood depictions.
Either way, I have dragged the thread off-topic with another rambling post... oh my.
I did like the way everything, well, most things (save for really intricate or advanced stuff) were made in-situ on Pandora... it is a really interesting geeky spaceflight parallel.
EDIT:
Capt_hensley: Yeah, I would certainly believe a 300 billion figure for the whole thing... I must say that I think that all the awesome photographs we get from if are worth every penny, but I am sure the average member of the public is wondering where all this groundbreaking research is going to... :shifty: