The argument about entanglement goes back to Einstein. The notorious EPR (Einstein/Podolsky/Rosen) thought experiment of 1935 demonstrated that if quantum mechanics was correct then the determination of the state of one quantum particle could instantaneously and over any distance determine the state of another particle. This was afterwards referred to as entanglement or quantum entanglement.
Archive for the ‘Philosophy’ Category
The year is 1954.
Alan Turing, is returning home from work at the University of Manchester where he is using the recently installed Ferranti Mark 1 computer to further his researches on morphogenesis and other matters. This behemoth of a machine with 4,000 valves, 2,500 capacitors, 15,000 resistors, 100,000 soldered joints and 6 miles of wire boasts a huge 5120 bit random access CRT memory, 72kbytes of magnetic drum storage and can carry out over 800 additions every second; but for Turing this is not nearly enough. He dreams of the day when a computer can play chess as well as he can and can even fool us into thinking that it might be conscious. After all, isn’t the human brain just a computer with nerves instead of valves?
Bohm argued that both relativity and quantum theory meant that any analysis of the physical world into distinct, well-defined parts was no longer relevant. He suggests that the structure of holograms gives an insight into his concept of undivided wholeness.
In his description of holograms, coherent light from a laser passes through a half-silvered mirror, with part of the beam falling onto a photographic plate, while the other part illuminates a particular structure. Light reflected from this structure also reaches the plate where it interferes with the light waves arriving from the half-silvered mirror. When this photographic plate is lit by laser light a wave front is created, which is seen to have a similar form to the light coming off the illuminated structure. This allows an observer to see the whole of the structure in three dimensions. If only a small part of the photographic plate is illuminated, the whole structure is still visible although less sharply defined.
Thoughts on Reality An insubstantial pageant The one thing we can be reasonably sure of is that what we see has nothing to do with reality. Physics tells us as much as that; that there are no things and there is no colour green. Visual information is delivered to the retina by photons fluctuating at varying frequencies. The photons are either reflected from or produced by ‘objects’, which can in their turn be understood as quantum particles held together by the charges of the electromagnetic Read more […]
Chalmers asks why it is that we are conscious, and argues that a radical idea is required if we are to arrive at an explanation. Recent research has concentrated on searching for correlates of consciousness, such as brain regions that are active when consciousness is reported. However, such correlates are just things that coincide with consciousness rather than explanations. Emergence has also been seen as an explanation of consciousness, in the sense that hurricanes emerge from particular weather systems, and by analogy, consciousness emerges from neural systems and possibly also computer systems. However, Chalmers sees this as only explaining structure and behaviour rather than consciousness as such.
At peace with my brain Patricia Churchland interviewed by Graham Lawton :: New Scientist, 30 November 2013 :: www.newscientist.com Summary and review of the above interview In this interview, it is apparent that the philosopher, Patricia Churchland, has moved on to occupy the neuroscience territory. As part of the group of 1990s thinkers that directed consciousness towards what some might argue to be its present cul-de-sac, in which sensible people are inhibited about discussing any Read more […]
The recent science fiction film, Ex Machina, about the invention of a conscious android takes us straight to the heart of the nature of consciousness. The android, named Ava, has a clear choice, preference and desire to be free from the underground chamber in which she is confined, and also to be free from the direction of her inventor. The inventor, Nathan, asks the other main character, Caleb, to go beyond the Turing test. This is good advice as the Turing test was an annoying distraction Read more […]
The Computational Explanatory Gap James Reggia, Derek Monner & Jared Sylvester :: Journal of Consciousness Studies, 21, No. 9&10, 2014, pp. 153-78 :: www.imprint.co.uk/jcs.html Summary and review of the above paper INTRODUCTION: The durability of the explanatory gap between neural processing and consciousness is seen as surprising given the successes of neuroscience in recent decades. Models of cognitive processing still require external direction, which is exactly what the conscious Read more […]
Whitehead places events rather than bits of matter at the centre of scientific enquiry. Qualia of subjective experiences are abstractions of the character of these events, while space and time are abstractions of the relations between events. The distinctions between both mind and matter and subject and object are abolished in dealing with subjective experience.