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🔗 Help break my "proof" of p = np... i can't find the error
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- "Help break my "proof" of p = np... i can't find the error" | 2011-12-23 | 12 Upvotes 1 Comments
🔗 Background of .plan files: the 1977 Finger Protocol
In computer networking, the Name/Finger protocol and the Finger user information protocol are simple network protocols for the exchange of human-oriented status and user information.
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- "Background of .plan files: the 1977 Finger Protocol" | 2011-12-18 | 19 Upvotes 7 Comments
🔗 Wikipedia shuts down Italian site because of Berlusconi's "Wiretapping Act"
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- "Wikipedia shuts down Italian site because of Berlusconi's "Wiretapping Act"" | 2011-10-04 | 271 Upvotes 59 Comments
🔗 “Bush hid the facts” bug
Bush hid the facts is a common name for a bug present in some versions of Microsoft Windows, which causes text encoded in ASCII to be interpreted as if it were UTF-16LE, resulting in garbled text. When the string "Bush hid the facts", without newline or quotes, was put in a new Notepad document and saved, closed, and reopened, the nonsensical sequence of Chinese characters "畂桳栠摩琠敨映捡獴" would appear instead.
While "Bush hid the facts" is the sentence most commonly presented on the Internet to induce the error, the bug can be triggered by many strings with letters and spaces in the same positions, for example "hhhh hhh hhh hhhhh". Other sequences trigger the bug as well, including even the text "a ".
The bug occurs when the string is passed to the Win32 charset detection function IsTextUnicode
. IsTextUnicode
sees that the bytes match the UTF-16LE encoding of valid (if nonsensical) Chinese Unicode characters, concludes that the text is valid UTF-16LE Chinese and returns true
, and the application then incorrectly interprets the text as UTF-16LE.
The bug had existed since IsTextUnicode
was introduced with Windows NT 3.5 in 1994, but was not discovered until early 2004. Many text editors and tools exhibit this behavior on Windows because they use IsTextUnicode
to determine the encoding of text files. As of Windows Vista, Notepad has been modified to use a different detection algorithm that does not exhibit the bug, but IsTextUnicode
remains unchanged in the operating system, so any other tools that use the function are still affected.
Discussed on
- "Bush Hid the Facts" | 2023-07-22 | 12 Upvotes 1 Comments
- "“Bush Hid the Facts”" | 2021-05-15 | 206 Upvotes 33 Comments
- "The "Bush hid the facts" bug" | 2015-12-08 | 139 Upvotes 28 Comments
🔗 Information cascade
An Information cascade or informational cascade is a phenomenon described in behavioral economics and network theory in which a number of people make the same decision in a sequential fashion. It is similar to, but distinct from herd behavior.
An information cascade is generally accepted as a two-step process. For a cascade to begin an individual must encounter a scenario with a decision, typically a binary one. Second, outside factors can influence this decision (typically, through the observation of actions and their outcomes of other individuals in similar scenarios).
The two-step process of an informational cascade can be broken down into five basic components:
1. There is a decision to be made – for example; whether to adopt a new technology, wear a new style of clothing, eat in a new restaurant, or support a particular political position
2. A limited action space exists (e.g. an adopt/reject decision)
3. People make the decision sequentially, and each person can observe the choices made by those who acted earlier
4. Each person has some information aside from their own that helps guide their decision
5. A person can't directly observe the outside information that other people know, but he or she can make inferences about this information from what they do
Social perspectives of cascades, which suggest that agents may act irrationally (e.g., against what they think is optimal) when social pressures are great, exist as complements to the concept of information cascades. More often the problem is that the concept of an information cascade is confused with ideas that do not match the two key conditions of the process, such as social proof, information diffusion, and social influence. Indeed, the term information cascade has even been used to refer to such processes.
Discussed on
- "Information cascade" | 2017-04-23 | 22 Upvotes 4 Comments
🔗 Curse of knowledge
The curse of knowledge is a cognitive bias that occurs when an individual, communicating with other individuals, unknowingly assumes that the others have the background to understand. This bias is also called by some authors the curse of expertise, although that term is also used to refer to various other phenomena.
For example, in a classroom setting, teachers have difficulty teaching novices because they cannot put themselves in the position of the student. A brilliant professor might no longer remember the difficulties that a young student encounters when learning a new subject. This curse of knowledge also explains the danger behind thinking about student learning based on what appears best to faculty members, as opposed to what has been verified with students.
Discussed on
- "Curse of knowledge" | 2017-04-23 | 92 Upvotes 30 Comments
- "Curse of knowledge" | 2012-03-26 | 74 Upvotes 8 Comments
🔗 Tree hacker
Axel Erlandson (December 15, 1884 – April 28, 1964) was a Swedish American farmer who shaped trees as a hobby, and opened a horticultural attraction in 1947 advertised as "See the World's Strangest Trees Here," and named "The Tree Circus."
The trees appeared in the column of Robert Ripley's Believe It or Not! twelve times. Erlandson sold his attraction shortly before his death. The trees were moved to Gilroy Gardens in 1985.
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- "Tree hacker" | 2011-09-27 | 12 Upvotes 1 Comments
🔗 List of company name etymologies
This is a list of company names with their name origins explained. Some of the origins are disputed.
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- "List of company name etymologies" | 2011-09-27 | 66 Upvotes 12 Comments
🔗 Meta-jokes
Meta-joke refers to several somewhat different, but related categories: joke templates, self-referential jokes, and jokes about jokes (also known as meta-humor).
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- "Meta-jokes" | 2011-09-27 | 63 Upvotes 22 Comments