The way in which knowledge progresses, and especially our scientific knowledge, is by unjustified (and unjustifiable) anticipations, by guesses, by tentative solutions to our problems, by conjectures. These conjectures are controlled by criticism: that is, by attempted refutations, which include severely critical tests. They may survive these tests; but they can never be positively justified: they can neither be established as certainly true nor even as 'probable' (in the sense of the probability calculus). Criticism of our conjectures is of decisive importance: by bringing out our mistakes it makes us understand the difficulties of the problems which we try to solve. This is how we become better acquainted with our problem, and able to propose more mature solutions: the very refutation of a theory - that is, of a tentative solution to our problem - is always a step forward that takes us nearer the truth. And this is how we can learn from our mistakes. As we learn from our mistakes our knowledge grows, even though we may never know - that is, know for certain. Since our knowledge can grow, there can be no reason here for despair of reason. And since we can never know for certain, the can be no authority here for any claim to authority, for conceit over our knowledge, or for smugness.
The essays and lectures of which this book is composed apply this thesis to many topics, ranging from problems of the philosophy and history of the physical and social sciences to historical and political problems.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
The way in which knowledge progresses, and especially our scientific knowledge, is by unjustified (and unjustifiable) anticipations, by guesses, by tentative solutions to our problems, by conjectures. These conjectures are controlled by criticism: that is, by attempted refutations, which include severely critical tests. They may survive these tests; but they can never be positively justified: they can neither be established as certainly true nor even as 'probable' (in the sense of the probability calculus). Criticism of our conjectures is of decisive importance: by bringing out our mistakes it makes us understand the difficulties of the problems which we try to solve. This is how we become better acquainted with our problem, and able to propose more mature solutions: the very refutation of a theory - that is, of a tentative solution to our problem - is always a step forward that takes us nearer the truth. And this is how we can learn from our mistakes. As we learn from our mistakes our knowledge grows, even though we may never know - that is, know for certain. Since our knowledge can grow, there can be no reason here for despair of reason. And since we can never know for certain, the can be no authority here for any claim to authority, for conceit over our knowledge, or for smugness.
The essays and lectures of which this book is composed apply this thesis to many topics, ranging from problems of the philosophy and history of the physical and social sciences to historical and political problems.
Karl Popper (1902-1994). Philosopher, born in Vienna. One of the most influential and controversial thinkers of the twentieth century.
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
Vendeur : HPB-Red, Dallas, TX, Etats-Unis
Paperback. Etat : Good. Connecting readers with great books since 1972! Used textbooks may not include companion materials such as access codes, etc. May have some wear or writing/highlighting. We ship orders daily and Customer Service is our top priority! N° de réf. du vendeur S_458772838
Quantité disponible : 1 disponible(s)
Vendeur : Tacoma Book Center, Tacoma, WA, Etats-Unis
Paperback. Etat : Fair. Etat de la jaquette : No Dustjacket. Later Edition. ISBN 9780415043182. Trade Paperback. Fifth edition. TIGHT SOUND READING COPY ONLY DUE TO highlighting and underlining throughout; otherwise average wear. No Signature. N° de réf. du vendeur 4217078
Quantité disponible : 1 disponible(s)
Vendeur : Windows Booksellers, Eugene, OR, Etats-Unis
Paperback. Handsome copy 431 pp. N° de réf. du vendeur 735915
Quantité disponible : 1 disponible(s)
Vendeur : Anybook.com, Lincoln, Royaume-Uni
Etat : Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Book contains pen markings. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,800grams, ISBN:9780415043182. N° de réf. du vendeur 4317225
Quantité disponible : 1 disponible(s)
Vendeur : Anybook.com, Lincoln, Royaume-Uni
Etat : Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Book contains pen & pencil markings. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,800grams, ISBN:9780415043182. N° de réf. du vendeur 4317227
Quantité disponible : 1 disponible(s)
Vendeur : Anybook.com, Lincoln, Royaume-Uni
Etat : Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Book contains pen, pencil & highlighter markings. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,800grams, ISBN:9780415043182. N° de réf. du vendeur 4317226
Quantité disponible : 1 disponible(s)
Vendeur : BookAddiction (IOBA, IBooknet), Canterbury, Royaume-Uni
Softcover. Etat : Very Good. xiv, 432pp. Pictorial laminated light card covers. 8vo. Light chipping to edges and wear to covers, corners starting to curl. Pages starting to age. Otherwise, internally, neat, clean and tight. N° de réf. du vendeur 039503
Quantité disponible : 1 disponible(s)
Vendeur : Sequitur Books, Boonsboro, MD, Etats-Unis
Paperback. Etat : Good. Softcover. Shelf wear. Binding cocked. Moderate creasing. Scattered highlighting and markings. N° de réf. du vendeur 2108110151
Quantité disponible : 1 disponible(s)
Vendeur : Anybook.com, Lincoln, Royaume-Uni
Etat : Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,800grams, ISBN:9780415043182. N° de réf. du vendeur 3979768
Quantité disponible : 1 disponible(s)
Vendeur : GoldBooks, Denver, CO, Etats-Unis
Paperback. Etat : new. New Copy. Customer Service Guaranteed. N° de réf. du vendeur 21U46_94_0415043182
Quantité disponible : 1 disponible(s)