Viacheslav Landakov
@landviach.bsky.social
Eastern Slobozhanschyna Ukrainian. Engineer, lawyer, teacher, amateur philosopher and political activist. Photography ~ drawing ~ writing ~ coding.
Ideas matter!
Ideas matter!
The Petrosian radius is a practical, observation-based definition of galaxy size, defined as the radius where the local surface brightness equals 20% of the mean surface brightness inside that radius.
#GalaxyDynamics
#GalaxyDynamics
February 9, 2026 at 11:46 PM
The Petrosian radius is a practical, observation-based definition of galaxy size, defined as the radius where the local surface brightness equals 20% of the mean surface brightness inside that radius.
#GalaxyDynamics
#GalaxyDynamics
To think historically is not to trade one national myth for another—not to replace a Russian myth with a Ukrainian one. It is to see how forms like Ukraine or Russia become possible at all, by grasping the limits of structures, indeterminacy, and possibilities for freedom.
#TimothySnyder
#TimothySnyder
February 9, 2026 at 1:42 AM
To think historically is not to trade one national myth for another—not to replace a Russian myth with a Ukrainian one. It is to see how forms like Ukraine or Russia become possible at all, by grasping the limits of structures, indeterminacy, and possibilities for freedom.
#TimothySnyder
#TimothySnyder
Every intelligent reader, when he carefully reflects what the problem of the possibility of synthetic propositions a priori requires, must at first regard it as insoluble and even impossible. This actually happened to David Hume.
February 7, 2026 at 6:13 AM
Every intelligent reader, when he carefully reflects what the problem of the possibility of synthetic propositions a priori requires, must at first regard it as insoluble and even impossible. This actually happened to David Hume.
If men attempt questions beyond human capacity—such as the origin of worlds, or region of spirits—they may long beat the air in fruitless contests and reach no conclusion. But in common life and experience, you'd think that disputes endure only through ambiguous expressions that keep opponents apart
February 6, 2026 at 2:00 PM
If men attempt questions beyond human capacity—such as the origin of worlds, or region of spirits—they may long beat the air in fruitless contests and reach no conclusion. But in common life and experience, you'd think that disputes endure only through ambiguous expressions that keep opponents apart
The Law of Suspects of September 17 defined suspicion of counter-revolution so vaguely that almost anyone could find themselves compromised under its categories.
#TheFrenchRevolution
#RRPalmer
#TwelveWhoRuled
#TheFrenchRevolution
#RRPalmer
#TwelveWhoRuled
February 5, 2026 at 10:29 PM
The Law of Suspects of September 17 defined suspicion of counter-revolution so vaguely that almost anyone could find themselves compromised under its categories.
#TheFrenchRevolution
#RRPalmer
#TwelveWhoRuled
#TheFrenchRevolution
#RRPalmer
#TwelveWhoRuled
What earlier periods could justify in compact religious or artistic forms, modern life cannot. Its complexity and reflexivity make it hard to see how practices conflict or undermine one another, so tensions go unnoticed rather than consciously balanced, leaving modern norms perpetually in question.
January 30, 2026 at 6:37 PM
What earlier periods could justify in compact religious or artistic forms, modern life cannot. Its complexity and reflexivity make it hard to see how practices conflict or undermine one another, so tensions go unnoticed rather than consciously balanced, leaving modern norms perpetually in question.
Hegel traced Germany’s fate to a ‘German’ idea of freedom: on major matters all deliberated, fostering autonomy that resisted impersonal authority. This self-willed individuality, he argued, became a European norm, since Europe itself had been created by Germanic peoples.
#RichardBourke
#RichardBourke
January 22, 2026 at 10:45 PM
Hegel traced Germany’s fate to a ‘German’ idea of freedom: on major matters all deliberated, fostering autonomy that resisted impersonal authority. This self-willed individuality, he argued, became a European norm, since Europe itself had been created by Germanic peoples.
#RichardBourke
#RichardBourke
Historically, the illegibility of certain urban and rural spaces has shielded them from external control, providing a margin of political autonomy. By contrast, St. Petersburg stands as the planned utopian capital—what Dostoyevsky called “the most abstract and premeditated city in the world.” #Scott
January 21, 2026 at 5:04 PM
Historically, the illegibility of certain urban and rural spaces has shielded them from external control, providing a margin of political autonomy. By contrast, St. Petersburg stands as the planned utopian capital—what Dostoyevsky called “the most abstract and premeditated city in the world.” #Scott
Society for Constitutional Information was intended for the circulation, at the expense of the members, of many books which few others would be at the expense of buying. Whether the books so charitably circulated were ever as charitably read is more than I know.
#EdmundBurke
#EdmundBurke
January 18, 2026 at 4:34 AM
Society for Constitutional Information was intended for the circulation, at the expense of the members, of many books which few others would be at the expense of buying. Whether the books so charitably circulated were ever as charitably read is more than I know.
#EdmundBurke
#EdmundBurke
Observers found that the logarithm of galaxy surface brightness as a function of radius varies linearly across stellar disks. The scale length h is defined as the distance over which surface brightness declines by a factor of e—a log-scale choice rather than a physical boundary of the galaxy.
January 16, 2026 at 10:18 PM
Observers found that the logarithm of galaxy surface brightness as a function of radius varies linearly across stellar disks. The scale length h is defined as the distance over which surface brightness declines by a factor of e—a log-scale choice rather than a physical boundary of the galaxy.
Russia’s effort to undermine the EU took several forms: recruiting European leaders and parties to advance disintegration; penetrating digital and TV media to sow distrust; promoting extreme nationalists and fascists under the banner of “Eurasia”; and endorsing separatism in all its varieties.
January 14, 2026 at 5:11 PM
Russia’s effort to undermine the EU took several forms: recruiting European leaders and parties to advance disintegration; penetrating digital and TV media to sow distrust; promoting extreme nationalists and fascists under the banner of “Eurasia”; and endorsing separatism in all its varieties.
While analytic propositions and synthetic #aposteriori judgments are easily understood—the former grounded in contradiction, the latter in experience—the real problem remains: how are synthetic propositions #apriori possible?
#Kant
#Prolegomena
#Kant
#Prolegomena
January 13, 2026 at 10:27 PM
While analytic propositions and synthetic #aposteriori judgments are easily understood—the former grounded in contradiction, the latter in experience—the real problem remains: how are synthetic propositions #apriori possible?
#Kant
#Prolegomena
#Kant
#Prolegomena
We cannot point out that circumstance in the cause, which gives it a connexion with its effect.
We have no idea of this connexion; nor even any distinct notion what it is we desire to know, when we endeavour at a conception of it.
#DavidHume
#AnEnquiry
We have no idea of this connexion; nor even any distinct notion what it is we desire to know, when we endeavour at a conception of it.
#DavidHume
#AnEnquiry
January 13, 2026 at 4:39 AM
We cannot point out that circumstance in the cause, which gives it a connexion with its effect.
We have no idea of this connexion; nor even any distinct notion what it is we desire to know, when we endeavour at a conception of it.
#DavidHume
#AnEnquiry
We have no idea of this connexion; nor even any distinct notion what it is we desire to know, when we endeavour at a conception of it.
#DavidHume
#AnEnquiry
Richard Bourke: The history of political thought is about studying which bits of the past are still living in our contemporary environment and which are not, which concepts are still operative, how have they developed and what kind of traction they have.
January 12, 2026 at 7:27 AM
Richard Bourke: The history of political thought is about studying which bits of the past are still living in our contemporary environment and which are not, which concepts are still operative, how have they developed and what kind of traction they have.
Having confiscated lands and buildings from the church and from the émigrés for more than five billion livres, the French Republic issued paper notes, called assignats. By 1793 these notes had become full legal tender, a holder of which could also exchange them for confiscated lands and buildings.
January 8, 2026 at 10:38 PM
Having confiscated lands and buildings from the church and from the émigrés for more than five billion livres, the French Republic issued paper notes, called assignats. By 1793 these notes had become full legal tender, a holder of which could also exchange them for confiscated lands and buildings.
In his Phenomenology, Hegel not only offers a dialectical-historical narrative of how the Europeans have come to take what they do as authoritative and definitive for themselves, but also shows why dialectic is not something optional for us, why it's not sufficient to carry on in the same way.
January 8, 2026 at 10:23 PM
In his Phenomenology, Hegel not only offers a dialectical-historical narrative of how the Europeans have come to take what they do as authoritative and definitive for themselves, but also shows why dialectic is not something optional for us, why it's not sufficient to carry on in the same way.
For #Hegel, Campo Formio merely capped a long decline begun at Westphalia: Germany, he declared, was “no longer a state.” Rejecting moralistic politics, he argued for hard realism and unified power, blaming imperial fragmentation and French-imposed restructuring.
#RichardBourke
#RichardBourke
January 4, 2026 at 7:14 PM
For #Hegel, Campo Formio merely capped a long decline begun at Westphalia: Germany, he declared, was “no longer a state.” Rejecting moralistic politics, he argued for hard realism and unified power, blaming imperial fragmentation and French-imposed restructuring.
#RichardBourke
#RichardBourke
Revolutionary breaks in thought processes did not only apply to the mathematical world and the world of empirical science but could also apply to metaphysics, and had also applied to the moral history of mankind.
#RichardBourke
#Kant
#IdeasPodcast
#PrincetonUP
10:00
#RichardBourke
#Kant
#IdeasPodcast
#PrincetonUP
10:00
Richard Bourke,
Podcast Episode · Princeton UP Ideas Podcast · 01/25/2025 · 1h 7m
podcasts.apple.com
January 3, 2026 at 6:37 AM
Revolutionary breaks in thought processes did not only apply to the mathematical world and the world of empirical science but could also apply to metaphysics, and had also applied to the moral history of mankind.
#RichardBourke
#Kant
#IdeasPodcast
#PrincetonUP
10:00
#RichardBourke
#Kant
#IdeasPodcast
#PrincetonUP
10:00
Where civil society was strong and organized, it resisted cadastral mapping, forcing it to be late, voluntary, and fragmented (England). Only where society was weak could a strong central state impose early, uniform maps — turning land into legible, taxable property (Napoleonic France)
#JamesCScott
#JamesCScott
January 1, 2026 at 7:21 AM
Where civil society was strong and organized, it resisted cadastral mapping, forcing it to be late, voluntary, and fragmented (England). Only where society was weak could a strong central state impose early, uniform maps — turning land into legible, taxable property (Napoleonic France)
#JamesCScott
#JamesCScott
Disc galaxies have a more complex distribution of stellar populations than ellipticals, featuring ongoing star formation as well as a substantial presence of old stars.
#GalaxyDynamics
#IgnacioFerreras
#GalaxyDynamics
#IgnacioFerreras
December 30, 2025 at 9:09 PM
Disc galaxies have a more complex distribution of stellar populations than ellipticals, featuring ongoing star formation as well as a substantial presence of old stars.
#GalaxyDynamics
#IgnacioFerreras
#GalaxyDynamics
#IgnacioFerreras
The birth of modern science, as far as Kant is concerned, is not simply a collection of new observations. Kant believed that people developed new hypotheses which transform our way of seeing things.
#RichardBourke
#IdeasPodcast
#PrincetonUP
9:00
#RichardBourke
#IdeasPodcast
#PrincetonUP
9:00
Richard Bourke,
Podcast Episode · Princeton UP Ideas Podcast · 01/25/2025 · 1h 7m
podcasts.apple.com
December 26, 2025 at 4:38 PM
The birth of modern science, as far as Kant is concerned, is not simply a collection of new observations. Kant believed that people developed new hypotheses which transform our way of seeing things.
#RichardBourke
#IdeasPodcast
#PrincetonUP
9:00
#RichardBourke
#IdeasPodcast
#PrincetonUP
9:00
Even though a galaxy’s electromagnetic spectrum comes from ordinary matter (baryons), it is gravitationally bound predominantly by dark matter, which contributes about 85 percent of its mass.
#IgnacioFerreras
#FundamentalsOfGalaxyDynamics
#IgnacioFerreras
#FundamentalsOfGalaxyDynamics
December 26, 2025 at 1:49 AM
Even though a galaxy’s electromagnetic spectrum comes from ordinary matter (baryons), it is gravitationally bound predominantly by dark matter, which contributes about 85 percent of its mass.
#IgnacioFerreras
#FundamentalsOfGalaxyDynamics
#IgnacioFerreras
#FundamentalsOfGalaxyDynamics
Organic life has no history, only spirit has a history, a development of itself by itself such that it retains its identity in each of its particularizations, and when it negates them it simultaneously preserves them in order to raise them to a higher form.
#Hegel
#Hyppolite
#PhenomenologyOfSpirit
#Hegel
#Hyppolite
#PhenomenologyOfSpirit
December 26, 2025 at 12:10 AM
Organic life has no history, only spirit has a history, a development of itself by itself such that it retains its identity in each of its particularizations, and when it negates them it simultaneously preserves them in order to raise them to a higher form.
#Hegel
#Hyppolite
#PhenomenologyOfSpirit
#Hegel
#Hyppolite
#PhenomenologyOfSpirit
Kant: Although Hume did not formally differentiate between analytic and synthetic judgements, what he said was equivalent to that pure mathematics contains only analytic, but metaphysics synthetic, a priori judgments, in which, however, he was greatly mistaken.
#Kant
#Prolegomena
#Kant
#Prolegomena
December 23, 2025 at 4:12 PM
Kant: Although Hume did not formally differentiate between analytic and synthetic judgements, what he said was equivalent to that pure mathematics contains only analytic, but metaphysics synthetic, a priori judgments, in which, however, he was greatly mistaken.
#Kant
#Prolegomena
#Kant
#Prolegomena
The only immediate utility of all sciences, is to teach us, how to control and regulate future events by their causes.
#Hume
#AnEnquiry
#Hume
#AnEnquiry
December 23, 2025 at 1:06 AM
The only immediate utility of all sciences, is to teach us, how to control and regulate future events by their causes.
#Hume
#AnEnquiry
#Hume
#AnEnquiry