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«في كل مرة يقدم أحد التقارير العلمية قدرًا من المعلومات فإنه يكون مصحوبًا بهامش للخطأ — وهو تذكرة هادئة، ولكن دءوبة ومثابرة بأنه لا توجد أي معرفة بالغة… - Carl Sagan
" "«في كل مرة يقدم أحد التقارير العلمية قدرًا من المعلومات فإنه يكون مصحوبًا بهامش للخطأ — وهو تذكرة هادئة، ولكن دءوبة ومثابرة بأنه لا توجد أي معرفة بالغة الكمال أو منزهة عن الخطأ فهو قياس يُحدد مدى تصديقنا لما نعتقد أننا نعرفه، فإذا كانت هوامش الخطأ صغيرة، ترتفع دقة معرفتنا التجريبية، وإذا كانت هوامش الخطأ كبيرة، يرتفع، عندئذ، عدم اليقين بصدق معرفتنا، وفي غير الرياضيات البحتة لا يوجد شيء معروف على وجه اليقين.
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About Carl Sagan
Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the hypothesis, accepted since, that the high surface temperatures of Venus can be attributed to, and calculated using, the greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect will change the earth's climate system.
Biography information from Wikiquote
Also Known As
Native Name:
Carl Edward Sagan
Alternative Names:
Sagan
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Carl E. Sagan
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Carl E Sagan
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C. E. Sagan
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C.E. Sagan
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C E Sagan
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C. Sagan
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C Sagan
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Sagan C
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Sagan C.
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Sagan C. E.
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Sagan CE
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Additional quotes by Carl Sagan
The surface of the Earth is the shore of the cosmic ocean. From it we have learned most of what we know. Recently, we have waded a little out to sea, enough to dampen our toes or, at most, wet our ankles. The water seems inviting. The ocean calls. Some part of our being knows this is from where we came. We long to return. These aspirations are not, I think, irreverent, although they may trouble whatever gods may be.
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