University Of Cambridge Alumni

"Consider the example of a time capsule... geologists... establish[ed] detailed correlations between the structure of fossils and rocks... They concluded... an immense , vastly longer than the bible-deduced... 6000 years. They explained... a long process... in accordance with... laws of nature. They discovered ... and... present evidence for it extends today... to all branches of science, especially cosmology and genetics."

"[[wikt:stability#Noun|[S]tability]] of solids, the fossils and rocks... exist... essentially unchanged. ...[T]he configuration carries intrinsic semantic information... different intelligent beings can in principle deduce the law or process.. Support for this is is the independent discovery of evolution by natural selection by Wallis and Darwin."

"and variety are central to my critique of 'it from bit'. For we can only talk meaningfully about a thing, including a , if it has distinguishing attributes. The way that they are knit together, as in the taste, shape and colour of an apple, defines the structure of the thing."

"Shannon information... [which] he also called entropy or ... involves things (...Shannon ...messages) and probabilities for those things."

"[[Symbols|[S]ymbols]] have no meaning if divorced from the entities that they represent."

"[W]e must distinguish three kinds of information: [1] Shannon’s information, the uncertainty as to which message will be selected from a source; [2] factual information, the content of such a message; and [3] intrinsic semantic information, which distinguishes a random message, or configuration, from one that carries meaning and to some extent explains its... genesis. All... have... underpinning in things."

"The concepts of message and probability enable one, for a definite source of N messages, to define Shannon’s information. If p_i,\quad i = 1, 2, ..., N, is the relative probability of message i and \log p_i is its base-2 logarithm, then the information I of the given source is(1) \quad I = - \sum_{k=1}^N p_i \log p_i.The minus sign makes I positive because all probabilities, which are necessarily greater than or equal zero, are less than unity (their sum being\textstyle \sum_{i}^N p_i = 1, so that their logarithms are all negative."

"Ontological primacy should not be given to information but to things, as has always been the standpoint of realists."

"I find no reason to reverse the standard assumption of physics... what we experience can be explained by the assumption of an external world governed by law."

"Shannon-type message sources could not exist if the universe were not subject to laws of nature and far from ."

"It is a mistake to believe that the digits 0 and 1, being abstract, represent the immaterial. Quite... the contrary... they stand for something quintessentially concrete."

"I argue... this weakens but not necessarily destroys the argument that nature is fundamentally digital and continuity an illusion."

"Greek astronomers observed intricate motions of the sun, moon, and planets on the two-dimensional sky. They explained them—saved the appearances—by positing simple regular motions... in three dimensions. The success... [was] brought to a triumphant conclusion by Kepler..."

"[T]hings, not information, are primary. ... 'bit' derives from 'it'."

"Richard Feynman... said, "Time is what happens when nothing else does." ...[T]hat's ...not the right way to think about time."

"[I]n 1898... Henri Poincaré wrote... "On the Measure of Time" and he said... there are two fundamental problems to do with time. One... with the definition of duration... What does it mean to say that a second today is the same... [H]e said there's another issue... [not] so widely recognized. ...[H]ow do you define simultaneity at spatially separated points?"

"He... explain[ed] how the astronomers... had to grapple with the problem of defining definition, because for 2 1/2 millennia there had been just one standard of time... the rotation of the earth. ...[T]hat had provided an incredibly accurate clock. It's... lost only a few hours in 2 1/2 thousand years. ...Very easy to use. Astronomers only... had to glance at the night sky, at the... Big Dipper... to tell the time within a minute or two... But in the 1890s a crisis developed when they found that using the earth... and... Newton's laws of motion and gravity... the Moon was speeding up. ...[T]hey thought ...the earth was slowing down because of the tidal effects of the moon... and... this would mean that the earth was not a good timekeeper at the accuracy that they wanted."

"How do you define duration? What does it mean to say that a second today is the same as a second tomorrow? Newton in his... Principia... 1687, gave a... definition of absolute time, which he says flows uniformly without relation to anything external... [H]e says... if nothing... were to happen in the universe... if everything froze... time would still pass uniformly. ...[S]o ...time exists before anything else..."

"[A NOW] has no duration. ...[I]t's absolutely instantaneous. There is no thickness to it. Nothing changes. ...So these s, in one sense, are truly eternal, because they never change, and on the other hand, because nothing changes, they are experienced as a flash. ...[It]'s a nice contradiction... [T]he eternal is experienced as a flash, because nothing changes."

"There is nothing in between... [NOWs]. Each are separate snapshots. ...These [real photographs] ...are not changed by ...reversing the order ...It may be convenient for ...for the way we think about the world and for ordering our experiences, to suppose that these come in a certain order; but ...the picture is not changed... the snapshot is... self-contained."

"Poincaré clearly posed these two problems and... seven years later... independently... Einstein and Poincaré... solved... the problem of defining definition at spatially separated points..."

"[W]hat we call yesterday is self-contained and has its experience of being yesterday, and today has memories of yesterday; and therefor I say that it's later... but each is completely self-contained, and there's no reason why you should put one... here, and another one there..."

"If you could look microscopically... at... my molecules... you would not recognize me from one second to another. In my body, every second, one hundred million million million... hemoglobin molecules... is destroyed, and the same number is created. So... at each split second, I'm really a very different person."

"[T]he work that I did with... has shown... time that is measured by clocks is... an average of all the changes in the universe."

"Einstein... revealed... extraordinary things... [H]is space and time seem to be knit together in a way you can't pull them apart... [S]omeone moving relative to me at any speed would... divide space and time in different ways... [T]he huge excitement about simultaneity meant that the... issue of duration has... been forgotten..."

"[I]f you imagine two NOWs... there will be some difference between them, and if you work out some weighted average of all of that difference... you can call that... the amount of time between them. ...[T]his has nothing to do with some substance... It's just difference between those two things. ...[T]his is the quantity that is... being measured by my watch..."

"If you could freeze the camera now and... show me as I am, and all the atoms... and... the whole universe... like a snapshot, the would be... a NOW."

"(quote at 14:08 of 1:54:14)"

"[[Time|[T]ime]] is really an illusion... and motion too... [T]hey are not really there in the external world. They are put into the world by us, in the way we interpret it, and by our brains..."

"[T]his is very different from the Newtonian picture where Newton presupposes there's a river of time flowing, that is there before anything is put into it. ...[T]he things are there first, and the time is deduced from it afterwards."

"Thus, even now, three and a half centuries after Galileo... it is still remarkably difficult to say categorically whether the earth moves..."

"Wheeler argued that anything physical... derives its... existence... from discrete detector-elicited information-theoretic answers to yes or no quantum binary choices: bits."

"In fact, I once had a discussion with a distinguished astrophysicist who said to me, well, this is what Mach said, and this is what Mach did and what he required. And I said to him, now excuse me, if you don't mind me saying, what you've just told me is your interpretation of Dennis Sciama's interpretation of Einstein's interpretation of Mach. And he said you're quite right. I’ve never read a word of Mach."

"It is in part these properties of a network—known as “scale-free” properties—that allow diseases, news, and fashions to cascade rapidly through populations. It is the same scale-free properties of a shared mycorrhizal network that might allow a young plant to survive in a heavily shaded understory, or infochemicals to ripple out across a stand of trees in a forest. “A young seedling will quickly become tied up within a complex, interwoven, and stable network,” Beiler explained. “You would expect this to increase its chances of survival and increase the resilience of the forest.” But only up to a point. It is the same scale-free properties that make a wood wide web vulnerable to targeted attacks. Eliminate Google and Amazon and Facebook overnight or shut down the three busiest airports in the world, and you’ll cause havoc. Selectively remove large hub trees—as many commercial logging operations do in an effort to extract the most valuable timber—and serious disruption will ensue."

"Fermentation is domesticated decomposition—rot rehoused."

"Entangled Life by Merlin Sheldrake changed the way I look at fungi."

"The success of this approach depends on the ecological fit. Poorly matched mycorrhizal species might do more harm to plants than good. Worse, introducing opportunistic fungal species to new environments might displace local fungal strains with unknown ecological consequences. It is a fact not always taken into account by the fast-growing industry of commercial mycorrhizal products, often marketed as one-size-fits-all quick fixes. As in the ballooning market for human probiotics, many of the microbial strains sold are selected not because they are particularly suitable but because they are easy to produce in manufacturing facilities."

"Tricked out of our expectations, we fall back on our senses. What’s astonishing is the gulf between what we expect to find and what we find when we actually look."

"The more of their surroundings that hyphae can touch, the more they can consume. The difference between animals and fungi is simple: Animals put food in their bodies, whereas fungi put their bodies in the food."

"It is no longer possible to conceive of any organism—humans included—as distinct from the microbial communities they share a body with."

"... are a , which is as broad a category of animals or plants. But they are a kingdom of life which has not had a kingdom's worth of attention."

"The impact of fungal diseases is increasing across the world: Unsustainable agricultural practices reduce the ability of plants to form relationships with the beneficial fungi on which they depend. The widespread use of antifungal chemicals has led to an unprecedented rise in new fungal superbugs that threaten both human and plant health."

"Eamon Duffy's The Stripping of the Altars takes its place besides A. G. Dickens' The English Reformation as a landmark book in the history of the Reformation, and with this book the author assumes commanding rank in the revisionist camp."

"The most beautiful history book of the year is Marking the Hours: English People and their Prayers, 1240–1570... Eamon Duffy examines surviving copies of the Book of Hours, the most intimate book of the late Middle Ages, tracing the marks left by readers — everything from laundry lists scribbled in the margins to personalised versions of prayers. This richly illustrated book takes us back into the hearts and souls of the English long ago."

"The Stripping of the Altars by Eamon Duffy, professor of the history of Christianity at Cambridge and a former president of Magdalene College, is the most important study of our time in the field of early modern English religious history. It has completely changed our view of the reception of Protestant theology under the Tudors."

"Low entropy states are not closer to death. Death is characterized by dissipation, decay and dispersion. It is the ultimate high entropy state—literally, the edge of our existential world, when we are gently absorbed back into the universe."

"Marian devotion is very deeply embedded in Ultramontane papalist Catholicism, and has been for centuries. The Virgin in the nineteenth century, apparitions of the Virgin, play an enormous part in focusing Catholic loyalty, Catholic identity, and also in offering a dimension of Christianity... If you've got a very rigid, hierarchical, masculinely-dominated form of Christianity, the tender, nurturing, feminine element in Christianity can only be rescued by some sort of balancing act. This I think was an enormous strength in nineteenth century Catholicism over and against say nineteenth century Fundamentalist Evangelicalism - with which it has a great deal in common in some respects - but where I think it has an edge is in this feminine dimension."

"The reason the Pope is the Pope is that he is the custodian of the relics of St Peter."

"I do not think there is a Christian shape to history in the sense that things move according to God's plan in any discernible way. I think a Christian approaches history with a sense that human life matters and has meaning and that it is both possible and important to tell the truth. Perhaps that constitutes a Christian approach to history because none of those things can be taken for granted now, even among people practicing history. There are people who practice history who think that it is a branch of the creative arts in the sense that we impose patterns on the past. I believe that we discover patterns in the past."

"Duffy's aim is to redress an old historiographical imbalance. He has admirably succeeded in this, even if at the cost of another imbalance. This is, as it stands, a very illuminating and satisfying book, which takes a major step towards better understanding of the English Reformation."