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Everything posted by Sensei
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Distillation? Check boiling point of water. Check boiling point of compound you want to distill. Check decomposition point of compound. If boiling point is smaller than decomposition point, then you can do distillation, to separate compound from water.
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Problem of Turkey and its people is Erdogan.. yet another dictator-to-be.. Like disease spreading on the entire world..
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Will A.I destroy more jobs than it creates?
Sensei replied to Obsessed With Gaming's topic in Computer Science
I just gave example that your comment "Y2K problem is nonsense", was actually nonsense. There is "limitless" errors in existing software caused by resolution of stored data in original software, hardware, signed/unsigned 8 bits, 16 bits, 32 bits etc. The all these errors someday will appear. The majority of them, in unexpected moment. https://en.wikipedia.org/wiki/Year_2038_problem "The Year 2038 problem relates to representing time in many digital systems as the number of seconds passed since 1 January 1970 and storing it as a signed 32-bit binary integer. Such implementations cannot encode times after 03:14:07 UTC on 19 January 2038. Just like the Y2K problem, the Year 2038 problem is caused by insufficient capacity of the chosen storage unit." No. You are too self-confident about your skills and overestimates them. Then read this: https://en.wikipedia.org/wiki/Time_formatting_and_storage_bugs NASA lost spacecraft due to such error. Nonsense you say? I will better no comment your skills... https://news.nationalgeographic.com/news/2013/09/130920-deep-impact-ends-comet-mission-nasa-jpl/ ""Basically, it was a Y2K problem, where some software didn't roll over the calendar date correctly," said A'Hearn. The spacecraft's fault-protection software (ironically enough) would have misread any date after August 11, 2013, he said, triggering an endless series of computer reboots aboard Deep Impact." "On September 20, 2013, NASA abandoned further attempts to contact the craft.[77] According to A'Hearn,[78] the most probable reason of software malfunction was a Y2K-like problem. August 11, 2013, 00:38:49, was 232 of one-tenth seconds from January 1, 2000, leading to speculation that a system on the craft tracked time in one-tenth second increments since January 1, 2000, and stored it in a signed 32-bit integer, which then overflowed at this time, similar to the Year 2038 problem.[79]" https://en.wikipedia.org/wiki/Deep_Impact_(spacecraft)#Contact_lost_and_end_of_mission There was no large issues, just because programmers and company management were persuaded problem is real, and they managed to fix their software prior date.. Year 2010 "For example, the SMS protocol uses BCD encoding for dates, so some mobile phone software incorrectly reported dates of messages as 2016 instead of 2010. Windows Mobile was the first software reported to have been affected by this glitch; in some cases WM6 changed the date of any incoming SMS message sent after 1 January 2010 from the year 2010 to 2016.[8][9]" -
The first step of (hot) fusion is to ionize electric neutral Hydrogen-1 into free protons and free electrons. It requires 13.6 eV energy per single H atom. That's 1312 kJ/mol. Free protons (or other charged particles, the same sign of charge) are repelling each other. Therefor you need to overcome Coulomb's Barrier. https://en.wikipedia.org/wiki/Coulomb_barrier Whether there is needed additional energy depends on particles that you intend to fuse together. There might be needed activation energy in some cases. BTW, fusion of 1H into 4He is not direct process, but it's in several different reactions. That depends on particles you are accelerating.
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Will A.I destroy more jobs than it creates?
Sensei replied to Obsessed With Gaming's topic in Computer Science
Okay. So you don't understand Y2K issue. Let me explain. In old times, some programmers used packet BCD (binary-coded decimal) to store year number. In range 00..99, single byte data. https://en.wikipedia.org/wiki/Binary-coded_decimal On slow computers, or microcontrollers with limited capacity of built-in memory, it was used to save code and memory for translation back and forth from the real integer to ASCII to display to user of device. Early devices didn't have built-in CPU/microcontroller multiplication, division and modulo math functions built-in them (because they are slow to execute, and require massive amount of transistors, at that time designers bothered about it). So to convert from integer to ASCII and back, there would be needed massive amount of code to simulate them. 8 bit CPUs like Motorola 6502/6510 didn't have multiplication, division nor modulo math functions. Check list of instructions of Intel 8080/8088 and Zilog Z80. BCD instructions were implemented built-in a lot of CPUs and microcontrollers. The all devices and software source codes had to be reviewed and fixed or replaced by new one. So you don't understand global warming either.. -
Will A.I destroy more jobs than it creates?
Sensei replied to Obsessed With Gaming's topic in Computer Science
There will be no money or there will be minimum unconditional income. People won't have to go to job to earn money. See what happens if somebody wins on lottery: on majority of the cases instantly resigns from regular work. Why? Because majority of the people hate their daily jobs, and work only for money.. Smart people can find alternative activities like self improvement by learning and training.. -
Are they free of charge, or you have to pay for them? If I were you I would not pay any tiny bit. Everything you can learn alone from the Internet. The thing is teacher in the school will tell you what you don't know, what you have to read, and then check if you really acquired material. Alone you have to do it by yourself. Self inspire for learning, self inspire for making projects. i.e. one project per day. C/C++ programming reference website: https://en.cppreference.com/w/ If you're Windows/PC user, download free Visual Studio Express from MSDN (Microsoft Developer Network) website: https://visualstudio.microsoft.com/pl/vs/express/ (the best one is Visual Studio Express 2008 and VS 2010, newer one are very slow, which might be discouraging if you don't have top-notch powerful machine with SSD drives, 8 GB+ memory and at least Core i7+) After reading and following entire C/C++ reference, you will have to make challenges/exercises. The all programmers are receiving such at job interview to check their level of knowledge. Google for "C/C++ exercises" "programming job interview exercises/challenges" etc. etc. f.e. https://coderbyte.com/ If you want to work in IT, knowledge about HTML, CSS, JavaScript, and PHP will be required: https://www.w3schools.com/ I don't think so. It depends on what kind of software you will be writing. For sure, you need to know numerical systems. Calculate in binary, hexadecimal, and decimal. Logic and bit-wise operators.
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I find it powerful and useful that everybody can add something other people forgot to mention. Obvious devastation attempts are detected by special bots which analyze what kind of modification user did. Less obvious devastation are fixed by human moderators. If somebody participated in creation of the real paper Encyclopedia made error, that error will remain there forever. Till the next fixed release of Encyclopedia. But who is rebuying book they already have? If you're not expert in area, there is no way you will see error. Contrary to Wikipedia. On Wikipedia it'll be fixed in a few hours or days.
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Did you start your research about gluten from reading Wikipedia page about it.. ? https://en.wikipedia.org/wiki/Gluten "In a small part of the general human population, gluten can trigger adverse autoimmune reactions responsible for a broad spectrum of gluten-related disorders, including coeliac disease, non-coeliac gluten sensitivity, gluten ataxia and dermatitis herpetiformis.[6] Their treatment is the gluten-free diet."
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That's what I would do the first.. +1
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Submerged submarine does not have to fight with unfavorable weather conditions which can be on the surface of ocean..
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Energy is property of quantum particles. Electrically charged opposite sign particles attract each other, the same sign of charge particles repel each other. If we have electric neutral particle, it's not attracted by external electric field created by other charged particle. If you have planet in the opposite region of orbit than Earth. Do you see it? It receives photons from the Sun from region invisible directly from the Earth. That's absolute nonsense. If you leave lightbulb, electric oven or TV turned on, and go sleep or outside, you will receive smaller bill for electricity? Electric devices also emit light, emit photons, sometimes in visible spectrum like lightbulb or TV, always in invisible spectrum, due to thermal radiation. Light can be absorbed by matter. It depends on properties of photon and properties of matter (or antimatter), whether photon will be absorbed, and how much energy will be absorbed, etc. etc.
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Cookies nonsense and other changes
Sensei replied to studiot's topic in Suggestions, Comments and Support
Then show your alternative solution programmatically.. ? Solution which is not HTTP GET query string, as it's (worser) predecessor of keeping logged user session id. Store session id inside of body of HTML page in hidden data like HTML comment.. ? Every website creator could do that. Every using completely different technique. If somebody intends to use cookies for storing identity of user (for tracing purposes), the same person easily could use HTML tags to store that information as well. i.e. if politicians would ban cookies, the all webmasters would encode such data inside of HTML tags. -
Cookies nonsense and other changes
Sensei replied to studiot's topic in Suggestions, Comments and Support
Like I said in earlier post, cookies are essential temporary local settings. Without them no forum nor Web v2.0 could work (alternative methods are worser and easier for hackers to intercept. That's the reason to introduce HTTP POST cookies instead of HTTP GET query string variables in '90 years). That's where is stored logged user session id (it expires after couple minutes of inactivity with web browser), what's where are stored user settings (if you click "I accept cookies on this website" that information is stored in cookies!). -
Cookies nonsense and other changes
Sensei replied to studiot's topic in Suggestions, Comments and Support
Privacy law introduced "way to be forgotten", "way to remove user data from any database".. Hackers write e-mails or SMS random people, pretending they have their data. Users are visiting specially prepared websites with intention to remove their data from fake company database and are entering their data and hackers acquire data they did not have yet. Which bit in the whole procedure you don't understand?! There are ways to infect phone, after user visited malicious website, which I, for obvious reasons, won't reveal here, to not teach people how to do that. -
Cookies nonsense and other changes
Sensei replied to studiot's topic in Suggestions, Comments and Support
How to store phone number invisible to user at first sight.. ? e.g. send_sms( phone_number, "[content of malicious message] http://[ url ]/" + md5( phone_number ) ); (eventually with some additional tag). User goes to website e.g. http://[ url ]/fa604719431619455874cef2164b0de2" (or so), hacker made db of phone_numbers and corresponding md5() hash-codes, and look it up by md5 hash-code, and receives info that phone number is +441234567890 https://www.password-generator-tool.com/md5-hash-generator It does not matter if you will use Tor, VPN, or proxy. The same hash-code, the same phone number. If I see in such messages hash-codes, but want to remain unrecognized, and visit it anyway, I am stripping entire query from URL Then you can use Tor, VPN or proxy.. (better from virtual machine/sandbox) To be removed from any (legit or illegal) database, user has to enter his/her details. Write e-mail address, first name, second name. The all data on the plate to hackers, crooks, thieves. -
Cookies nonsense and other changes
Sensei replied to studiot's topic in Suggestions, Comments and Support
Apparently you don't understand.. GDPR was the nicest surprise gift for thieves, crooks, hackers, virus makers they could get, nicely packed gift by politicians. Notice what we have now: flood of SMS, or e-mails, to random people all over the country, with information like "If you would like to remove your data from our database please click here".. And incompetent unaware user is nicely politely going to website possibly made by hacker, what user should never ever do in the first place! And after visit, his/her computer can be infected by virus. They simply make script which goes through the all phone numbers in specified range, without knowing who are these people, sending message, and after user clicked in the message, they get a lot of information about person. Information they did not have previously! What is IP, approximate location, what is phone number, that phone number is active, device details (Android device or Apple, Windows, Mac or Linux), what is web browser and its version, possibly what plugins are installed on it. etc. etc. -
Mathematics ends in contradiction-an integer=a non-integer
Sensei replied to anne242's topic in Speculations
I have no idea why they're downgrading quality of their materials with crappy design of websites, crappy layout etc. etc. Even if they would have something interesting to say, such clumsiness immediately put you off.. -
I have weight with +-0.01 gram precision, just in case somebody would like to measure potatoes up to 200.00 g+-0.01g precision.. I am leaving rice till the all water sink in it. It's dehydrated rice from Tesco. That depends on how much of water we have in the pot. e.g. there is 1) ~500 mL of water and 100 g dehydrated rice, and 2) ~500 mL of water and 200 g of dehydrated rice. After 20 minutes of boiling I am leaving rice till the all/majority of water is absorbed. Then flushing it in cold water, so rice doesn't stick together.
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Uninhabited by human doesn't mean it is uninhabited by other life forms such as microorganisms.. https://en.wikipedia.org/wiki/Antarctic_microorganism Additionally elevation altitude of Antarctica reaches even 2 km. And it's ice. Where would you like to put waste? To reach the real ground it would require digging 2km + through ice, then some more through the ground..
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I am weighting e.g. rice, noodles, every time I am cooking them.. ...and altitude at which we are cooking.. (atmospheric pressure varies with altitude and influences water boiling temperature) https://en.wikipedia.org/wiki/High-altitude_cooking " The effect starts to become relevant at altitudes above approximately 2,000 feet (610 m). "
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Result will be the same. If something has to be done 5 minutes in 1000 W, and is microwaved 5 minutes in 500 W..
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The more precise would be saying use e.g. 200 grams of potatoes. Cooking recipes should have mentioned weight of ingredients. Improper amount of ingredient could dramatically influence taste of dish, or even ruin it. Improper cooking conditions i.e. wrong temperature could result in overcooked or undercooked dish.
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It looks very alike to bitwise operations: e.g. AND, OR, XOR, NAND, NOT etc. https://en.wikipedia.org/wiki/Bitwise_operation If you will do operation: 1 | 2 = 3 (binary %01 | %10 = %11) 3 & 2 = 2 (binary %11 & %10 = %10) etc. etc. Bitwise operations can be used not only on single bits, but vectors, lists, arrays, images, sounds etc. etc. (which are also just a bunch of bits). XOR operator. %110 ^ %011 = %101
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You are writing nonsense..