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For Your Every Summer RSVP, with Code: SUMMER15
Description
Thing Explainer: Complicated Stuff in Simple WordsDESCRIPTION : From the No. 1 bestselling author of What If? the man who created xkcd and explained the laws of science with cartoons comes a series of brilliantly simple diagrams ('blueprints' if you want to be complicated about it) that show how important things work: from the nuclear bomb to the biro. It's good to know what the parts of a thing are called, but it's much more interesting to know what they do. Richard Feynman once said that if you

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4.9 ★★★★★
Based on 1191 reviews
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Product Reviews
★★★★★ 5
Works as advertised
Good product
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Reviewed in the United States on February 26, 2026
★★★★★ 4
Good Fiber Source
Works well without being too harsh. Helps with medications that may cause you to be blocked.
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Reviewed in the United States on October 23, 2025
★★★★★ 5
Fiber 101
I love the idea of getting your daily fiber just by taking a pill form. It's so convenient.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Convenient for travel
Good for travel when you may not have a glass, a spoon and a place to mix the powdered version with water. Make no mistake, you must still drink at least 8- 12 ounces of water with the capsules, and one serving is 5 capsules. But, this is a bulking agent,!so that is to be expected.
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Reviewed in the United States on November 27, 2025
★★★★★ 5
Seems OK, but only time will tell
Seems OK, but only time will tell
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Reviewed in the United States on January 16, 2026




