> Humans evolutionarily think about movement with a 2 dimensional mindset because for much of our history we only needed to think about 2d movement. That might

> Humans evolutionarily think about movement with a 2 dimensional mindset because for much of our history we only needed to think about 2d movement. That might depend on whether the aquatic ape hypothesis is true ;) More seriously, in addition to diving and climbing, humans have been using throwing weapons for hundreds of thousands of years -- not the same as navigating one's body through 3 dimensions, but it still requires a 3 dimensional mindset because you need to work out where the trajectories will intersect with something traveling in a different plane of movement. So I'd be curious how much hard evidence there actually is for human deficiencies in 3 dimensional thinking compared to say dolphins or parrots.