once I began to see in 3D, I realized how wrong I had been. My theoretical knowledge of stereopsis did not prepare me in the least for the experience of seeing in stereo. Dr. Sacks must have suspected that stereopsis would provide me with an astonishing new way of seeing, one that I could not even have imagined

As my colleague Robin Paige likes to say, we are also social beings in a social world. So if we shift things just a bit to think instead about the environments we design and cultivate to help maximize learning, then psychology and sociology are vital for understanding these elements as well.

Using foo:::f instead of foo::f allows access to unexported objects.

The Automated R Instructor