经过三年的戴口罩生活和旅行限制，大部分与新冠病毒病相关的限制在2023年3月被解除。虽然香港市民的情绪得到了提升，但新冠病毒病例和流感病例的数量正在上升。全球的科学家一直在监测SARS-CoV-2的演变，并有报告显示病毒在不断变异，以及血液中的抗体水平下降。这引出了一个问题：我们需要每年接种SARS-CoV-2疫苗加强剂吗…
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從流感到新冠病毒病：是否需要每年接種SARS-CoV-2疫苗？
經過三年的戴口罩生活和旅行限制，大部分與新冠病毒病相關的限制在2023年3月被解除。雖然香港市民的情緒得到了提升，但新冠病毒病例和流感病例的數量正在上升。全球的科學家一直在監測SARS-CoV-2的演變，並有報告顯示病毒在不斷變異，以及血液中的抗體水平下降。這引出了一個問題：我們需要每年接種SARS-CoV-2疫苗加強劑嗎…
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From Influenza to COVID-19: Is annual SARS-CoV-2 vaccination necessary?
After three years of living with masks and travel restrictions, most COVID-related restriction policies were lifted in March, 2023. While the mood of citizens in Hong Kong is boosted, there are rising number of COVID and influenza cases. Scientists round the globe have been surveilling the evolution of SARS-CoV-2 and there are reports of constant mutation of the virus, together with report of declining antibody level in the blood, one question, thus, was raised: Should we get annual SARS-CoV-2 vaccine booster…
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一个都不能遗漏：栅栏错误
你要在下午一时至四时完成科目一至四的功课。如果你每小时完成一份就能准时完成所有功课，对或错？如果是五月一日至四日呢？如果每天做一份，你能及时跟功课说再见吗？这些问题背后引伸出更多问题：为甚么小时跟日子的算法会有所不同？我们应怎样数起？学校教的知识应用起来永远不会像想像中简单 — 显浅如数算事物也是如此…
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一個都不能遺漏：柵欄錯誤
你要在下午一時至四時完成科目一至四的功課。如果你每小時完成一份就能準時完成所有功課，對或錯？如果是五月一日至四日呢？如果每天做一份，你能及時跟功課說再見嗎？這些問題背後引伸出更多問題：為甚麼小時跟日子的算法會有所不同？我們應怎樣數起？學校教的知識應用起來永遠不會像想像中簡單 — 顯淺如數算事物也是如此…
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Not One Less: Fencepost Errors
You have from 1 pm to 4 pm to work on homework assignments for subjects #1 to #4. If you complete one assignment
per hour you should get them all done on time. Yes or no? Now how about if you have from 1 May to 4 May to complete
them? Can you get away with completing one assignment per day? These kinds of problems lead to more questions. Why are
hours and days counted differently? Where should we start counting from anyway? Applying what we learn in school is
never as simple as it seems – even with something as simple as counting…
