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Random thoughts on the controversy regarding the Facebook page "名校Secrets"
[Context: Hong Kong Facebook users, age 13-<~30]
In an era where everyone is talking about blockchains, I’m surprised no-one has proposed using a blockchain-based bulletin board as an alternative to the said page.
It would work a bit like BitMessage (though my last usage of it was about 5-6 years ago, and no pun intended), but each message is a signed cleartext broadcast instead of an encrypted message, and perhaps with the added features of quoting and/or replying to previous messages, and/or adding likes/dislikes, similar in feature to PTT.
There are two potential problems (assuming no 51% attacks), the first being a lack of (monetary) incentive for block-writers. I don’t suppose “SchoolCoin” would attract any monetary value, so such a BBS would have to rely solely on donated processing power (kind of like Tor relays). The second problem is spam/scam. Client-side spam filters can be implemented; note however that filter rule writers may be trying to censor posts.
Implementing an effective like/dislike / upvote/downvote system may not be straightforward. A spammer or a censor with sufficient resources can easily abuse it for their benefit. Potential mitigation: IP-address-based scoring system which reduces the importance of votes if many votes originated from the same IP address? Tor/open proxies may be used to bypass this, and reducing vote importance simply based on IP address being an exit node is being unfriendly for privacy-minded users or users suffering from large-scale internet censorship. So perhaps we can weigh votes based on past contributions, or even based on the received votes of past posts (though probably more computationally expensive to calculate). A sigmoid function may be a good choice for weighing, so that enthusiastic users won’t be given too much importance. An alternative is to have a logarithmic upper bound.
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Comment on John Paul Stevens's opinion to repeal the 2nd Amendment
“There were a myriad of problems which conspired to corrupt your reason and rob you of your common sense. Fear got the best of you, and in your panic you turned to the now high chancellor, Adam Sutler. He promised you order, he promised you peace, and all he demanded in return was your silent, obedient consent.”
— V, V for Vendetta (2005)Preview clipped. Expand | Read full post in new tab
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Comments on 2018 HKDSE Chinese questions
16/3，第一題，5:00PM
有人認為智能電話使人成為孤島，也有人認為智能電話是孤島間的橋樑。試談談你的看法。
（考材附有一幅獨自坐在島上的插圖）
(Source: https://www.facebook.com/Beacon.YYLam/posts/1975075409169941)
It’s interesting how people see “smartphones” as a thing which “connects” people.
I prefer to call them “portable computers”, which are able to communicate with each other iff a communication link is established.
If I were to set the question, I would replace “smartphones” with “the advancement of telecommunication technologies and digital electronics”.
22/3，第二題，6:30PM
如果一天由24小時增加至27小時，增加三小時，你認為香港人生活會變得更好還是更壞？試談談你的看法。
(Source: https://www.facebook.com/Beacon.YYLam/posts/1983487261662089)
根據國際單位制(SI)，”hour”（「小時」）及”day”（「日」或「天」）之定義均為秒的倍數，而秒則定義作銫133原子基態的兩個超精細能階間躍遷對應輻射的9,192,631,770個週期的持續時間，與地球自轉速度無關。惟人類及其他動植物的生活特性以日出日落之時間作基礎，故改變「天」之定義對人類生活絕無影響。人類只會再發明另一與地球自轉週期相約之單位，並於日常生活中改用該單位。
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Log of noisy/disruptive behaviour at C Pearce Hostel
2018-03-02T01Z Awoken by loud noises. Saw people gathering in the corridor outside C5 Pearce Hostel. Asked them to shut up.
2018-03-04T23:25Z Loud noises. Few people in corridor, several (~10) in the room next to C5. Been told it is a party room. Asked them to quiet down, reminded a party participant that college regulations require parties to end before 23:30.
2018-03-05T00:40Z Occasional loud screams and laughs could still be heard. Saw some of the participants (same people as those seen at 23:25). One of them promised to leave immediately.
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男子北角涉刑毀私家車被捕 - RTHK
乜嘢標題嚟…
《男子北角涉刑毀私家車被捕》 RTHK 即時新聞
#父涉姦兒子女友被捕Preview clipped. Expand | Read full post in new tab
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Nyaa Comments RSS Generator
Currently, Nyaa.si provides no way to notify users of new comments. I have written a server-side (HTTP) script which parses the comments and constructs an RSS feed (actually an Atom feed, but people seems to uses them interchangeably).
The script is hosted on https://nyaacomments.tk and the source code is available on GitHub.
Usage instructions are available at the hosted URL.
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Fact: HKBU's website blocks Tor exit nodes
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香港電台暑期實習職位
乜而家讀電子電訊都要識AutoCAD…
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煙花匯演配1812
我有冇聽錯？煙花匯演配1812？反了？ #VForVendetta
P.S. 原來唔係第一次，我亦唔係第一個發現
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Gone fishin'
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