“If you just want the gist, here’s the TL;DR version: [Elliptical Curve Crytography,] ECC is the next generation of public key cryptography, and based on currently understood mathematics, it provides a significantly more secure foundation than first-generation public key cryptography systems like RSA. If you’re worried about ensuring the highest level of security while maintaining performance, ECC makes sense to adopt. If you’re interested in the details, read on.”
—Nick Sullivan. ” A (relatively easy to understand) primer on elliptic curve cryptography.” Ars Technica. October 24, 2013.
Movie plots visualized.
“Directed by the pioneering UK documentarian Richard Leacock, Frames of Reference is a slick and surreal dive into physics fundamentals and, in particular, why everything is indeed relative.”
The Hacker’s Diet is a diet book by an engineer that figured out how to reduce his weight from 215 to 145 in a year after spending years being fat. It also includes the exercise program for people that don’t want to exercise that takes 15 minutes. Free and recommended.
Applied Science is a weekly YouTube channel for interesting applied science and technology.
What you need to know about arrests
Before your action
Identify an emergency contact. Make sure they know your name in both English and Chinese. After an arrest, you will need to tell them which police station you are at so they can help bring you a legal representative.
Before an arrest
The police may issue warnings, requests or messages through a loudspeaker and/or by raising various coloured (yellow, red, etc.) flags. Take note of their procedure, stay calm and discuss how you want to respond with fellow activists.
During an arrest
- The police can only arrest you if there is a reasonable suspicion that you have committed or are about to commit an offence. Upon the arrest, they must hence disclose the offence that you are suspected of. During an arrest, please remember a) the officer’s collar/shoulder number, b) the reason of arrest, and c) suspected offence.
- After you arrive at the police station, all your belongings will be confiscated by the police and taken away from out of sight. So think about the consequences when bringing sensitive objects or information with you.
- After being arrested, anything that you say may become a recorded statement, even if it’s not a formal statement (given in a police car, in the waiting room, etc.).
- Any conversation or banter with the police can become a useful information for their investigation, so avoid it if possible.
- You have the right to remain silent, to not answer questions, and to not sign documents.
At the station
- If at any time you feel unwell, you have the right to request a break during the proceedings to receive treatment at the hospital. (But be careful about leaving your companions as it may leave you alone and unprotected.)
- In most cases, aside from giving your telephone number, address and HKID number, you have a right to silence, to not answer questions, and to not sign documents.
- You can ask to speak to an external contact. First, contact your emergency contact, tell them which police station you’re at and what crime you’ve been accused of. Then seek legal assistance.
- You can ask the police to provide you with a list of lawyers.
- You will receive a copy of the “Notice to Persons in Custody”, which lays out your rights while you are detained, for you to keep.
- The maximum period they can detain you for is 48 hours (and only if the case is serious or there are reasonable grounds).
- The officers can request a body search, but they cannot ask you to undress without a valid reason.
- You can ask for breaks, and for food and drinks.
Giving a statement
Aside from your name, address and HKID number, you can choose not to answer any other questions. Many people fall prey to the carrot and stick methods of the police and accidentally signed a statement that contains an admission of an offence. Beware of the following when giving a statement:
- “You can see your lawyer after you give a statement” is a lie. It is key that you meet your lawyer and be legally advised before giving a statement.
- You don’t need to speak or answer questions unless you want to. Everything you say will be recorded by the police with pen and paper, and used as evidence in court.
- You can ask to be accompanied by a lawyer during questioning
- After being questioned by the police, you will receive a copy of your statement. Before receiving a copy of this, you may refuse to answer any further questions.
- The police cannot use intimidation, inducement or other inappropriate tactics to obtain a statement from you.
When you leave you can obtain
- Bail form (only available if bail was granted, it contains the conditions of bail, information for court appearance or change of details on the bail form)
- Charge sheet (name of charge, document summary)
- Record of statement
- Detained belongings
- The police must record all seized belongings, and return them to you unless they are used as evidence
- If you are physically injured by the police, you should go to a private clinic immediately for an examination when you are allowed to leave the station after the procedure is over
Climate change is “a path to the end of human civilization and modern society as we know it.”
—David Spratt and Ian Dunlop. “Existential Climate-Related Security Risk.” Breakthrough. June 2019.
Scenarios and social implications of climate change forecasting existential threat to humanity by 2050.
“The story is, Australian sheep farmers noticed that steel things that sheep often rubbed against did not rust. Sheep’s wool is thick with lanolin, which is removed in processing the wool. Soap makers use it, it is also used in cosmetics.One pound of anhydrous lanolin from eBay costs about $16. I mix it about 10:1 with light oil and apply with a brush or cloth. I also mix it with WD40 in a trigger spray. A pound goes a long way.
Since starting this about 10 years ago, rust is a thing of the past – except where I failed to apply this mixture. It has been 100% effective.”
“Number a sheet of paper from 1 to 70. Beside each number rate how important each statement is to you. Zero (0) means that the statement is not very important or is least descriptive of you. Five (5) means that the statement is very important or very descriptive of you. Use the numbers between 0 and 5 to show graduations between these extremes. If the statement doesn’t seem to apply to your situation, place an X beside it. There are no right or wrong answers. Have your spouse take the evaluation separately. Then compare the two answer sheets and discuss where you agree and differ.”