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Rúnar Bjarnason

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Rúnar Bjarnason

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Born
in Akureyri, Iceland
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Member Since
May 2012


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Rúnar Bjarnason I dislike the term "writer's block", since it sounds like something out of your control is blocking you from writing. If I find myself unable to write…moreI dislike the term "writer's block", since it sounds like something out of your control is blocking you from writing. If I find myself unable to write, it's usually because either I haven't done the work of clarifying what I really want to say, or I've written something that I'm unhappy with and I subconsciously don't want to proceed. Outlining, thinking on paper, and playing around with ideas can help with either of these. Giving myself permission to throw away what is already written can help move things forward. The key thing for me is to keep the stakes low. Pressure and stress are my worst enemies, both when writing and programming.(less)
Rúnar Bjarnason Category Theory by Steve Awodey, A Game of Thrones by George R. R. Martin, How We Know by Harry Binswanger, Type-Driven Development with Idris by Edwi…moreCategory Theory by Steve Awodey, A Game of Thrones by George R. R. Martin, How We Know by Harry Binswanger, Type-Driven Development with Idris by Edwin Brady, and A General History of Labyrinths by Silas Haslam.(less)
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A Comonad of Graph Decompositions

I want to talk about a comonad that came up at work the other day. Actually, two of them, as the data structure in question is a comonad in at least two ways, and the issue that came up is related to the difference between those two comonads.

This post is sort of a continuation of the Comonad Tutorial, and we can call this “part 3”. I’m going to assume the reader has a basic familiarity with comon

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Vasily Grossman
“Everything that lives is unique. It is unimaginable that two people, or two briar-roses, should be identical . . . If you attempt to erase the peculiarities and individuality of life by violence, then life itself must suffocate.”
Vasily Grossman, Life and Fate

Vasily Grossman
“There is a terrible similarity between the principles of Fascism and those of contemporary physics. Fascism has rejected the concept of a separate individuality, the concept of ‘a man’, and operates only with vast aggregates. Contemporary physics speaks of the greater or lesser probability of occurrences within this or that aggregate of individual particles. And are not the terrible mechanics of Fascism founded on the principle of quantum politics, of political probability?”
Vasily Grossman, Life and Fate

Vasily Grossman
“Human groupings have one main purpose: to assert everyone’s right to be different, to be special, to think, feel and live in his or her own way. People join together in order to win or defend this right. But this is where a terrible, fateful error is born: the belief that these groupings in the name of a race, a God, a party or a State are the very purpose of life and not simply a means to an end. No! The only true and lasting meaning of the struggle for life lies in the individual, in his modest peculiarities and in his right to these peculiarities.”
Vasily Grossman, Life and Fate

Vasily Grossman
“These camps – with their streets and squares, their hospitals and flea markets, their crematoria and their stadiums – were the expanding cities of a new Europe.”
Vasily Grossman, Life and Fate

Vasily Grossman
“After dancing all night at a New Year’s ball, a girl will be unable to say whether the time passed quickly or slowly. Similarly, a man who has done twenty-five years in the Schlüusselburg Prison will say: ‘I seem to have been a whole eternity in this fortress, and at the same time I only seem to have been here a few weeks.’ The night at the ball is full of looks, smiles, caresses, snatches of music, each of which takes place so swiftly as to leave no sense of duration in the girl’s consciousness. Taken together, however, these moments engender the sense of a long interval of time that contains all the joys of human existence. For the prisoner it is the exact opposite: his twenty-five years are composed of discrete intervals of time – from morning roll-call to evening roll-call, from breakfast to lunchtime – each of which seems unbearably long. But the twilight monotony of the months and years engenders a sense that time itself has contracted, has shrunk. And all this gives rise to the same sense of simultaneous quickness and endlessness felt by the girl at the ball.”
Vasily Grossman, Life and Fate

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