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[生活中的經濟學] 難度 5**,機會成本(Opportunity Cost) 一問,90% 美國大學生都做錯的一條問題

好耐之前睇過一本英文書 (忘記了書名,如有好心人提供請告之),係講日常生活現象的經濟解釋,例如雪柜點解冰隔(freezer)冇燈?(因為買既人唔肯為唔常要開既燈比額外錢) 點解女士既衫鈕門開右邊?(因為方便以前15-16世紀時傭人幫穿) 咁點解依家唔轉番?(因為若轉的話有可能被人誤以為是男裝) 仲有好多有趣的問題。

該書開首有一條關於機會成本的問題,據作者講不少美國大學選修基礎經濟的Year1學生,抽樣答有9成左右做錯 (書中話比冇讀經濟同學答,啱的比率反而高一點)。給講師答亦有一半錯。(這些比例是我記憶中的,但應該相差不遠)

在此把問題分享給大家挑戰一下 (適合 DSE 學生測試一下):

打獵,其實是很安全的。

CARPE DIEM 的 blog 看了一文章,內容說打獵比很多其他運動都安全得多,相比之下,踢足球比打獵危險多30多倍。
打獵為什麼會那麼安全?給三秒鐘你猜。。。

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因為它的另一方參賽選手沒有槍。



原文見 Fact of the Day: Hunting is Safer Than Bowling?
http://mjperry.blogspot.com/2011/12/fact-of-day-hunting-is-safer-than.html

According to the National Shooting Sports Foundation, hunting with firearms is one of the safest recreational activities in America (here's the press release and here's the fact sheet with sources provided). 
Based on the percentage of injuries per 100 participants, hunting with firearms (0.05%) is slightly safer than bowling (0.06%) or jogging (0.08%) and slightly less safe than billiards (0.02%), see chart above.  
The organization also points out that compared to hunting a person is: 11 times more likely to be injured playing volleyball 19 times more likely to be injured snowboarding 25 times more likely to be injured cheerleading or bicycle riding 34 times more likely to be injured playing soccer or skateboarding 105 more times likely to be injured playing tackle football.
Not surprisingly, the least safe sport is football (tackle) by far, followed by basketball, skateboarding, soccer, wrestling and bicycle riding (see chart below).

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