1
" Due to the various pragmatic obstacles, it is rare for a mission-critical analysis to be done in the “fully Bayesian” manner, i.e., without the use of tried-and-true frequentist tools at the various stages. Philosophy and beauty aside, the reliability and efficiency of the underlying computations required by the Bayesian framework are the main practical issues. A central technical issue at the heart of this is that it is much easier to do optimization (reliably and efficiently) in high dimensions than it is to do integration in high dimensions. Thus the workhorse machine learning methods, while there are ongoing efforts to adapt them to Bayesian framework, are almost all rooted in frequentist methods. A work-around is to perform MAP inference, which is optimization based.Most users of Bayesian estimation methods, in practice, are likely to use a mix of Bayesian and frequentist tools. The reverse is also true—frequentist data analysts, even if they stay formally within the frequentist framework, are often influenced by “Bayesian thinking,” referring to “priors” and “posteriors.” The most advisable position is probably to know both paradigms well, in order to make informed judgments about which tools to apply in which situations. "
4
" What would it mean in practice to eliminate all the 'negative people' from one's life? It might be a good move to separate from a chronically carping spouse, but it is not so easy to abandon the whiny toddler, the colicky infant, or the sullen teenager. And at the workplace, while it's probably advisable to detect and terminate those who show signs of becoming mass killers, there are other annoying people who might actually have something useful to say: the financial officer who keeps worrying about the bank's subprime mortgage exposure or the auto executive who questions the company's overinvestment in SUVs and trucks. Purge everyone who 'brings you down,' and you risk being very lonely, or, what is worse, cut off from reality. "
― Barbara Ehrenreich , Bright-Sided: How the Relentless Promotion of Positive Thinking Has Undermined America
7
" I replied that I did not quite know what my ailment had been, but that I had certainly suffered a good deal especially in mind. Further, on this subject, I did not consider it advisable to dwell, for the details of what I had undergone belonged to a portion of my existence in which I never expected my godmother to take a share. Into what a new region would such a confidence have led that hale, serene nature! The difference between her and me might be figured by that between the stately ship cruising safe on smooth seas, with its full complement of crew, a captain gay and brave, and venturous and provident; and the life-boat, which most days of the year lies dry and solitary in an old, dark boat-house, only putting to sea when the billows run high in rough weather, when cloud encounters water, when danger and death divide between them the rule of the great deep. No, the " Louisa Bretton" never was out of harbour on such a night, and in such a scene: her crew could not conceive it; so the half-drowned life-boat man keeps his own counsel, and spins no yarns. "
8
" We commonly speak as though a single 'thing' could 'have' some characteristic. A stone, we say, is 'hard,' 'small,' 'heavy,' 'yellow,' 'dense,' etc.
That is how our language is made: 'The stone is hard.' And so on. And that way of talking is good enough for the marketplace: 'That is a new brand.' 'The potatoes are rotten.' 'The container is damaged.' ... And so on.
But this way of talking is not good enough in science or epistemology. To think straight, it is advisable to expect all qualities and attributes, adjectives, and so on to refer to at least -two- sets of interactions in time. ...
Language continually asserts by the syntax of subject and predicate that 'things' somehow 'have' qualities and attributes. A more precise way of talking would insist that the 'things' are produced, are seen as separate from other 'things,' and are made 'real' by their internal relations and by their behaviour in relationship with other things and with the speaker.
It is necessary to be quite clear about the universal truth that whatever 'things' may be in their pleromatic and thingish world, they can only enter the world of communication and meaning by their names, their qualities and their attributes (i.e., by reports of their internal and external relations and interactions). "
― Gregory Bateson , Mind and Nature
15
" Instead of using their vastly increased material and technical resources to build a wonder-city, they built slums; and they thought it right and advisable to build slums because slums, on the test of private enterprise, " paid" , whereas the wonder-city would, they thought, have been an act of foolish extravagance, which would, in the imbecile idiom of the financial fashion, have " mortgaged the future" ; though how the construction to-day of great and glorious works can impoverish the future, no man can see until his mind is beset by false analogies from an irrelevant accountancy. "
