they're OK if there isn't too much depth to the 3D image, and don't need to change their focus too rapidly, but run into problems getting their eyes to converge if things get too extreme.
Well, I haven't seen one of the 3D movies and it sounds like I wouldn't much like them in that it would probably set off double vision which happens when I have to focus too rapidly. (All the result from a retinal detachment.)
I suspect that when all the sums are done it will turn out that 3D isn't making much more money than 2D - but film companies will continue to push it
Well, it didn't work out so well when they tried it before. In the Fifties, I think?
