If you looked closely at our holiday bookshelf in my post on August 12th 2020, you might have spotted ‘The Living Mountain‘ by Nan Shepherd [1893-1981] which a review in the Guardian newspaper described as ‘The finest book ever written on nature and landscape in Britain’. It is an account of the author’s journeys in the Cairngorm mountains of Scotland. Although it is short, only 108 pages, I have to admit that it did not resonate with me and I did not finish it. However, I did enjoy the Introduction by Robert MacFarlane and the Afterword by Jeanette Winterson, which together make up about a third of the book. MacFarlane draws parallels between Shepherd’s writing and one of her contemporaries, the French philosopher, Maurice Merleau-Ponty [1908-1961] who was a leading proponent of existentialism and phenomenology. Existentialists believe that the nature of our existence is based on our experiences, not just what we think but what we do and feel; while phenomenology is about the connections between experience and consciousness. Echoing Shepherd and in the spirit of Merleau-Ponty, MacFarlane wrote in 2011 in his introduction that ‘we have come increasingly to forget that our minds are shaped by the bodily experience of being in the world’. It made me think that as the COVID-19 pandemic pushes most university teaching on-line we need to remember that sitting at a computer screen day after day in the same room will shape the mind rather differently to the diverse experiences of the university education of previous generations. I find it hard to imagine how we can develop the minds of the next generation of engineers and scientists without providing them with real, as opposed to virtual, experiences in the field, design studio, workshop and laboratory.
‘I believe that energy can’t be destroyed, it can only be changed from one form to another. There’s more to life than we can conceive of.’ The quote is from the singer and songwriter, Corinne Bailey Rae’s answer to the question: do you believe in an afterlife? [see Inventory in the FT Magazine, October 26/27 2019]. However, the first part of her answer is the first law of thermodynamics while the second part resonates with Erwin Schrödinger’s view on life and consciousness [see ‘Digital hive mind‘ on November 30th, 2016]. The garden writer and broadcaster, Monty Don gave a similar answer to the same question: ‘Absolutely. I believe that the energy lives on and is connected to place. I do have this idea of re-joining all of my past dogs and family on a summer’s day, like a Stanley Spencer painting.’ [see Inventory in the FT Magazine, January 18/19 2020]. The boundary between energy and mass is blurry because matter is constructed from atoms and atoms from sub-atomic particles, such as electrons that can behave as particles or waves of energy [see ‘More uncertainty about matter and energy‘ on August 3rd 2016]. Hence, the concept that after death our body reverts to a cloud of energy as the complex molecules of our anatomy are broken down into elemental particles is completely consistent with modern physics. However, I suspect Rae and Don were going further and suggesting that our consciousness lives on in some form. Perhaps through some kind of unified mind that Schrödinger thought might exist as a consequence of our individual minds networking together to create emergent behaviour. Schrödinger found it utterly impossible to form an idea about how this might happen and it seems unlikely that an individual mind could ever do so; however, perhaps the more percipient amongst us occasionally gets a hint of the existence of something beyond our individual consciousness.
Max Tegmark, in his book Life 3.0 – being a human in the age of artificial intelligence, has taken a different approach to defining consciousness compared to those that I have discussed previously in this blog which were based on synchronous firing of assemblies of neurons [see, for example, ‘Digital hive mind‘ on November 30, 2016 or ‘Illusion of self‘ on February 1st, 2017] and on consciousness being an accumulation of sensory experiences [Is there a real ‘you’ or’I’? on March 6th, 2019]. In his book, Tegmark discusses systems based on artificial intelligence; however, the four principles or requirements for consciousness that he identifies could be applied to natural systems: (i) Storage – the system needs substantial information-storage capacity; (ii) Processing – the system must have substantial information-processing capacity; (iii) Independence – the system has substantial independence from the rest of the world; and (iv) Integration – the system cannot consist of nearly independent parts. The last two requirements are relatively easy to apply; however, the definition of ‘substantial’ in the first two requirements is open to interpretation which leads to discussion of the size of neuronal assembly required for consciousness and whether the 500 million in an octopus might be sufficient [see ‘Intelligent aliens?‘ on January 16th, 2019].
I had been queueing slowly up the steps to board a plane thinking about nothing in particular when, as I stepped into the plane, one of cabin staff said to me ‘Are you getting ready for winter?’ I looked at her somewhat perplexed because it was only September, and she pointed to the book that I was holding ready to read on the flight home. It was ‘Winter’ by Ali Smith. It is a novel with much to say on many issues.
One of the central characters in the novel, Art writes a blog and someone challenges him to write about a real thing, something that he remembers happening and not a blog thing. He describes a real childhood memory and when it is suggested that he should write about it, his response is he could never put something like that on-line because ‘it’s way to real’. I have some empathy with Art, because it can be difficult writing about your thoughts and memories for anyone to read. However, I have noticed that the readership of the blog goes up when I do write about such things [see for example ‘Thinking more clearly by writing weekly‘ on May 2nd, 2018 or ‘Depressed by exams‘ on January 31st, 2018]. So, if people are interested perhaps I should do it more often.
Another passage that resonated with me was about age. The narrator is her sixties, which I will be soon, and comments that ‘You never stop being yourself on the inside whatever age people think you are by looking at you from the outside.’ I think that this is true but perhaps difficult to reconcile with consciousness being an accumulation of sensory experiences [see ‘Is there a real ‘you’ or ‘I’‘ on March 6th, 2019]