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The Logical Leap

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The Logical LeapBy: David Harriman A groundbreaking solution to the problem of induction, based on Ayn Rand's theory of concepts. Inspired by and expanding on a series of lectures presented by Leonard Peikoff, David Harriman presents a fascinating answer to the problem of induction the epistemological question of how we can know the truth of inductive generalizations. Ayn Rand presented her revolutionary theory of concepts in her book Introduction to Objectivist

By: David Harriman  
A groundbreaking solution to the problem of induction, based on Ayn Rand's theory of concepts.

Inspired by and expanding on a series of lectures presented by Leonard Peikoff, David Harriman presents a fascinating answer to the problem of induction-the epistemological question of how we can know the truth of inductive generalizations.

Ayn Rand presented her revolutionary theory of concepts in her book Introduction to Objectivist Epistemology. As Dr. Peikoff subsequently explored the concept of induction, he sought out David Harriman, a physicist who had taught philosophy, for his expert knowledge of the scientific discovery process.

Here, Harriman presents the result of a collaboration between scientist and philosopher. Beginning with a detailed discussion of the role of mathematics and experimentation in validating generalizations in physics-looking closely at the reasoning of scientists such as Galileo, Kepler, Newton, Lavoisier, and Maxwell-Harriman skillfully argues that the inductive method used in philosophy is in principle indistinguishable from the method used in physics.

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SKU: 46145822456

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Theresa
New York, US
★★★★★ 4
Palmers Self Tanner
This is pretty good. I noticed a golden glow right after I used it. It smells good and didn't transfer onto my clothes. You can apply it whenever you want. It fades easily of course after a shower, however, just reapply it! I used my hands and just rubbed my entire body. Didn't really streak where it's super noticeable, but I did have a few and no big deal really. Just add more. You definitely get a nice glow and the price is great especially compared to the more expensive lotions that I didn't like at all! The bottle is a nice size. I recommend this if you don't want to spend a lot and you'll definitely get a tinted glow!
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Reviewed in the United States on May 8, 2026
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Falyn
Whiting, US
★★★★★ 1
A MESS
Idk where the bottle is broken but the entire shipping bag i relieved is FILLED with the lotion, i don't think this was packaged correctly and the only way i can replace this item is if i send this back??? Do you see this mess, how am i suppose to send this back? On the bright side smells super yummy i guess😔
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Reviewed in the United States on May 22, 2026
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trogrovest
Chelsea, US
★★★★★ 5
Five Stars
Been using for years. It moisturizes the skin and adds just enough tone.
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Reviewed in the United States on March 12, 2017
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sharon
Chelsea, US
★★★★★ 3
Not great
Pump top on bottle doesn't work and was leaking when I opened the package. The product itself works ok.
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Reviewed in the United States on May 24, 2026
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Shelley
San Leandro, US
★★★★★ 5
Love this Lotion. Highly recommend.
Love this lotion. it gives your skin a darker look. Leaves the skin very soft.
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Reviewed in the United States on May 13, 2026

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