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Monday, 23 December 2024

A Cranial Throughput of Just Ten bits per second

PET scan of a normal human brain, showing areas lit up in a spectrum of colours: some violet, others cyan, lime, yellow, orange and red, against a black surround.
According to a report in Science Alert, in a recent paper, neurobiologists Jieyu Zheng and Markus Meister from the California Institute of Technology found that “[T]he speed of the human brain's ability to process information has been investigated in a new study, and according to scientists, we're not as mentally quick as we might like to think.”

Read the full report here.

“In fact,” the report goes on, “research suggests our brains process information at a speed of just 10 bits per second. But how is this possible, in comparison to the trillions of operations computers can perform every second?”

Of course, those conversant with information technology will know that input and output to and from peripheral devices in computer systems is far slower, especially if it processes data sequentially rather than in parallel, than the speed of a central processing unit (CPUs); and specialist graphics processing units (GPUs) are lightning fast.

Thursday, 5 December 2024

The Divine Emanations

Portrait of Tipu Sultan by an anonymous Indian artist in Mysore, ca. 1790–1800. It shows the sultan facing to the left of the image. He is wearing a green robe adorned with gold, a dagger at his side, three strings of pearls, and a wide-brimmed green turban adorned with pearls, and decorations at the front. He is seated in a red chair and has his hand on a long white object at the bottom of the image.
For as long as he could remember, a man had been convinced that he was privy to divine emanations, but he could never quite pin down what they were or where they came from. They just seemed to arise as if from nowhere or arrive on the wind. And so obsessed did this man become, that he left his family and his job and set out one day to find the source of the emanations, travelling far into the mystical East.

He went from one wise man or woman to another and sat in their presence and enjoyed their rich hospitality for countless hours and from time to time he'd sense the divine emanations as they arose and say: “There you are! Did you, such a wise man, not notice that? That's what I was trying to explain to you: the Divine Emanations! That is what I seek.” But time and time again, the wise men and women would merely shrug their shoulders and shake their heads, apologizing that they could not be of assistance to the man in this matter, and he would leave their company to carry on his noble quest.

And then one day, this man came to the door of a Sufi – indeed the door of the Teacher of the Age. And no sooner had he finished the particularly rich and spicy meal that his host offered him and had begun to explain to him his great desire to sit in the presence of the source of the Divine Emanations, than he let out a whoop of joy. “There! That is what I mean! That is what I have dedicated my whole life to seeking. The Source of the Divine Emanations! Surely, you must sense it too? Could it be that after all these years of selfless devotion to my quest I have finally been rewarded by being allowed into the presence of the Source?”

The Teacher of the Age looked the man straight in the eye and shook his head. “Divine Emanations, my friend? Yes, there are indeed divine emanations, emanations so potent that merely spending time in the presence of the elect is sufficient to transform a man or woman.”

“But, listen carefully to me ...”