So John Carter is... Kinda awesome. But more on that soon.
I still remember one of the most irritating classes I ever had in high school. The teacher uses a video of segments of Star Wars to teach physics. Pointing out things like, there should be no recoil from laser turrets and the blatantly obvious fact that there is sound in the space combat. Loved the teacher, hated that lesson.
The only time anyone should ever care about science and technology in a film, is when actual science is being used to prove a point in the film world. If it does that and gets it wrong, it deserves to get crucified. Otherwise ignore it.
Also, how great is this old trailer for The Birds.