What makes online teaching different from classroom teaching?
The ever-astute Maxim Achkasov suggested that the difference lies in the way we communicate in the classroom, in a manner which exceeds the grasp of our five senses.
'There must be one more,' he avers, 'which makes it really different and probably "genuine" from any other way of communication.'
In trying to put my finger on what that sixth sense might be, I found an analogy in Oliver Sacks' excellent book of case studies, The Man Who Mistook His Wife For A Hat.
In it he relates the story of a patient of his who suffered from a viral infection in her spinal cord, and, as a result, lost the ability to move properly or control the tone of her voice.
The cause of this alarming impediment was the loss of proprioception.