Two Great Afternoon Reads

If these two essays bring you a fraction of the intrigue and happiness they brought me, your afternoon is about to get a whole lot better:
The Abyss: Music and Amnesia, by Oliver Sacks:
In March of 1985, Clive Wearing, an eminent English musician and musicologist in his mid-forties, was struck by a brain infection—a herpes encephalitis—affecting especially the parts of his brain concerned with memory. He was left with a memory span of only seconds—the most devastating case of amnesia ever recorded. New events and experiences were effaced almost instantly. As his wife, Deborah, wrote in her 2005 memoir, Forever Today:
‘His ability to perceive what he saw and heard was unimpaired. But he did not seem to be able to retain any impression of anything for more than a blink. Indeed, if he did blink, his eyelids parted to reveal a new scene. The view before the blink was utterly forgotten. Each blink, each glance away and back, brought him an entirely new view. I tried to imagine how it was for him. . . . Something akin to a film with bad continuity, the glass half empty, then full, the cigarette suddenly longer, the actor’s hair now tousled, now smooth. But this was real life, a room changing in ways that were physically impossible.’
In addition to this inability to preserve new memories, Clive had a retrograde amnesia, a deletion of virtually his entire past.
Slights of Mind: The Science of Magic, by George Johnson
Sounding more like a professor than a comedian and magician, Teller described how a good conjuror exploits the human compulsion to find patterns, and to impose them when they aren’t really there.
‘In real life if you see something done again and again, you study it and you gradually pick up a pattern,’ he said as he walked onstage holding a brass bucket in his left hand. ‘If you do that with a magician, it’s sometimes a big mistake.’
Pulling one coin after another from the air, he dropped them, thunk, thunk, thunk, into the bucket. Just as the audience was beginning to catch on — somehow he was concealing the coins between his fingers — he flashed his empty palm and, thunk, dropped another coin, and then grabbed another from a gentlemen’s white hair. For the climax of the act, Teller deftly removed a spectator’s glasses, tipped them over the bucket and, thunk, thunk, two more coins fell.
As he ran through the trick a second time, annotating each step, we saw how we had been led to mismatch cause and effect, to form one false hypothesis after another. Sometimes the coins were coming from his right hand, and sometimes from his left, hidden beneath the fingers holding the bucket.
He left us with his definition of magic: ‘The theatrical linking of a cause with an effect that has no basis in physical reality, but that — in our hearts — ought to.’