How a movie changed one man's vision (2012)

>“It turns out that the one-eyed view of the world is deceptive,” says McKee. If you ask people with normal stereovision to close one eye and judge the position of objects along the line of sight, they are terribly imprecise, even if they shake their heads to create motion parallax.

Wouldn't you expect people to do better with the vision strategy they've used their entire life? Isn't it better to compare people with normal stereovision and people who are stereoblind?

It's like complaining that rifles aren't accurate, because expert archers hit more targets with bow and arrow.

"According to the Nobel Prize-winning research from David Hubel and Torsten Wiesel in the 1960s, the brain may only have a short window of opportunity in which to develop binocular vision. These doors close early – at the end of childhood – after which people are locked into a two-dimensional world."

What factors would prevent someone from developing 3D vision? The article mentions overlapping images, but how would this manifest itself?

The book "Fixing My Gaze" by Susan Barry details her journey to to gaining stereo vision for the first time at age 50.