Newton-Hooke controversy in the opinion of scientists
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A presentation of Hooke’s 1674 monograph introducing the idea of universal gravity was included in the Philosophical Transactions (Royal Society 1775) and subsequently several letters containing observations, including one of Huygens. But obviously, after the publication of Principia in 1687, … Read More

Support and trend of falsifiability
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Popper’s supporters argued that most criticism is based on an incomprehensible interpretation of his ideas. They argue that Popper should not be interpreted as meaning that falsifiability is a sufficient condition for the demarcation of science. Some passages seem to … Read More

Imre Lakatos, The methodology of scientific research programmes – An Overview
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Imre Lakatos (1922-1974) was one of the modern philosophers of science and mathematics. His main contribution to philosophy was the development of the concept of methodology of scientific research programmes and the use of this methodology in the rational reconstruction … Read More

Criticism of Falsifiability
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Thomas Kuhn criticized falsifiability because it characterized “the entire scientific enterprise in terms that apply only to its occasional revolutionary parts,” (Kuhn 1970) and it cannot be generalized. In Kuhn’s view, a delimitation criterion must refer to the functioning of … Read More

Falsification and refutation
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Dogmatic falsifiability refers to scientific statements considered individually. These can be falsified and, depending on the outcome, scientific theories can be considered falsifiable and accepted, refuted, or can be maintained by adding ad-hoc hypotheses: ” There is one important method … Read More

Lakatos on justificationism
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The methodology of scientific research programmes is an improvement of Popper’s demarcation criterion between science and non-science, a theory of scientific rationality. For Popper, a theory is scientific only if it is empirically falsifiable, that is, if it is possible … Read More

About God in Newton’s correspondence with Richard Bentley and Queries in Opticks
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Correspondence with Richard Bentley In Newton’s correspondence with Richard Bentley, Newton rejected the possibility of remote action, even though he accepted it in the Principia. On February 25, 1692/93, in the third letter addressed to Bentley, Newton wrote: “It is … Read More

Newton’s Principia on God-mediated action
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As John Henry states, (Henry 2011) Newton simply wants to reaffirm the truth of God’s omnipresence without directly involving him in the physics of the world system. Newton simply wants to distance himself from a Cartesian concept of God and … Read More

Space, time, and time travel
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Newton supported the idea of absolute time, unlike Leibniz, for which time is only a relation between events and cannot be expressed independently, a statement in concordance with the relativity of space-time. (Crisp 2007) Eternalism claims that the past and … Read More

Science and pseudoscience – Falsifiability
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The delimitation between science and pseudoscience is part of the more general task of determining which beliefs are epistemologically justified. Science can be described as partly descriptive, partly normative. A definition of science can focus on descriptive content and specify … Read More

Grandfather paradox in time travel
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(Top: original billiard ball trajectory. Middle: the billiard ball emerges from the future, and delivers its past self a strike that averts the past ball from entering the time machine. Bottom: the billiard ball never enters the time machine, giving … Read More

Karl Popper’s demarcation problem
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Sfetcu, Nicolae, ” Karl Popper’s demarcation problem “, SetThings (January 24, 2019), MultiMedia Publishing (ed.), URL = https://www.setthings.com/en/karl-poppers-demarcation-problem/ Email: nicolae@sfetcu .com  This book is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International. To view a copy of this license, visit http://creativecommons.org/licenses/by-nd/4.0/. … Read More

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