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世界上有多少隻貓？：超速估算出一切事物，讓你看清大局的數字反應力: : 4 GoogleAppleSpaceX 10 10 Rob Eastaway Sunday TimesNew Scientist2020173 1987
作者: 羅勃．伊斯威 | 譯者: 郭哲佑
★ 英國暢銷數學思考作家，寫給社會人的非常規數字生存指南
★ 讓你化繁為簡、看清大局的4堂邏輯課
▍用超速估算技巧，大幅提升你的生產力、決策力與說服力
許多關鍵時刻的重要問題，並不是動動手指就能搞定。為什麼從Google、Apple、微軟到SpaceX面試時，都要問那些怪問題？因為，真正重要的不是答案，而是大腦思路──看面試者如何取捨眼前資訊，並找到可行方法。
放下計算機，跟著最會說故事的數學家，從最基本的邏輯上手，小至餐廳帳單、大至浩瀚宇宙，都比人早一步得到答案。不管是數據分析還是市場觀察，一本書抓住問題根本，逐步建立看清大局的全方位思考力。
別人還在思考答案，而你，已經想出解決方案。
「超速估算」的思考模式，就是解決一切問題的捷徑：
◆ 上網買東西，運費匯率加折扣，我到底有沒有虧？
◆ 從你家水電費，到明年的公司業績，如何掌握「遙遠」的數字？
◆ 利率、單位換算的超速估算法則……看出藏在細節裡的魔鬼！
◆ 如何不靠問卷調查，有效統計人群的意見和想法？
大多數人都沒發覺的真相──
◇ 數字不代表事實，就算用數的也會錯
◇ 越精確，越好？「可靠」的資訊卻可能誤導你
◇ 你看見的數據，很多都是別人估出來的
◇ 數字該如何取捨？你需要知道的，其實沒那麼多！
不管在日常還是職場，
認真的人花10分鐘算出正確答案，
聰明的人花10秒鐘抓出合理範圍。
翻開本書，拋去計算機和繁瑣的數字，
逐步學習「超速估算」的高效思維，
不管在何種場合，都能清晰地掌握問題、分析大局。
本書特色
★ 搭配內容，隨時自我測驗（書末附有參考解答）
★ 結合生活實例，輕鬆掌握實用知識
★ 配備基礎工具，一手掌握估算利器
★ 收錄奇思妙問，解決問題、思維升級
超載的資訊、塞滿眼前的數字，反而使人落入判斷誤區？而擁有「超速估算」的技巧，反而能用最高效率找到可行的方案。本書從生活實例出發，透過簡單但必要的工具與不可思議的神奇問題，展現給讀者超乎想像的思考邏輯。
作者
羅勃．伊斯威Rob Eastaway
屢獲殊榮的英國數學作家，曾任英國數學協會主席。
熱愛趣味數學，尤其是解謎遊戲，曾為《週日泰晤士報》（Sunday Times）和《新科學人》（New Scientist）出題。致力於傳播數學之美，定期上廣播節目談數學，獲邀為全英國各年齡層的聽眾演講，至今已累積超過20萬名聽眾。因在推廣數學上的卓越表現與貢獻，2017年榮獲齊曼獎章。善於將數學思考帶入一般人的日常生活，著有多本暢銷書，包括《為什麼公車一次來3班？》、《幾隻襪子湊一雙？》、《一條線有多長？》等（含合著）。
譯者
郭哲佑
1987年生，台灣大學中國文學研究所碩士畢業。研究文學，但喜歡投資與數字。譯有《龐氏風暴》、《為了自由》。
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4.3 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Perfect
Color: 01 - White, Size: King (2 Pillowcases)
I never leave reviews, but these pillowcases are great!
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Best night's sleep ever
Color: 06 - Aqua Gray, Size: Queen (2 Pillowcases)
ABSOLUTELY the BEST pillows I have ever slept on. My husband hates flat pillows and he absolutely sleeps like a dream on these. I HIGHLY RECOMMEND THESE.
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Reviewed in the United States on April 29, 2026
★★★★★ 3
Decent Comfort, but Honestly Overpriced for the Quality
Color: 06 - Aqua Gray, Size: King (2 Pillowcases)
I’ve heard a lot of hype about the Beckham Hotel Collection, so I decided to treat myself to this king-size set of luxury sateen pillowcases. Out of the box, they look very nice—the sateen weave gives them a subtle, sophisticated sheen that definitely upgrades the look of the bed. They feel relatively soft to the touch, and the 100% cotton material is breathable enough that I didn't find myself flipping the pillow over for a "cool side" in the middle of the night.
However, after using them for a bit, I’m struggling to see where the "luxury" price tag comes from. While they are perfectly functional pillowcases, the quality feels fairly mediocre compared to other 500-thread-count sets I’ve owned in the past. The fabric is a bit thinner than I expected, and after just one or two washes, I noticed some slight fraying around the inner seams. They just don't have that heavy, crisp, high-end hotel feel that the marketing leads you to believe you’re getting.
The biggest issue for me is the value proposition. There are plenty of other cotton sateen sets available for a fraction of the cost that offer the same—if not better—durability and softness. These aren't bad pillowcases by any means, but they aren't exceptional either. If I’m paying a premium for a "luxury" brand name, I expect the stitching to be flawless and the fabric to feel substantial, but these feel like standard department store linens.
I’m giving these three stars because they do the job and look decent on the bed, but they didn't wow me. If you can find them on a deep discount, they might be worth it, but at full price, I feel like I paid more for the branding than the actual quality of the cotton. I'll keep using them for now, but I won't be rushing out to buy a second set anytime soon.
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Reviewed in the United States on December 27, 2025
★★★★★ 5
Highly recommend
Color: 01 - White, Size: Queen (2 Pillowcases)
Nice, soft pillowcases.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Lovely pillowcases!
Color: 01 - White, Size: Queen (2 Pillowcases)
Lovely pillowcases! They are soft and silky perfect to rest your face on. Hotel feel and good quality.
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Reviewed in the United States on April 4, 2026