Sensei

Is this a big surprise? Why does anyone waste their time on you when you reject common knowledge.. ? I have provided the data of Cambridge University.. If you disagree with them, write to them to update their data according to your pet theories..

Your personal interpretation of words is irrelevant, since we use a common language, you have to use the same interpretation of a word or sentence as everyone else on the world, otherwise you won't be understood if you write a public post e.g. just like every day you do so.. ..better worry who will switch it off..

..a joke to one is real life to another entity.. ..it depends on competences, knowledge and privileges..

Who cares about your point of view? @swansont @Phi for All Instead of you, we have the Cambridge University dictionary: https://dictionary.cambridge.org/dictionary/english/self-made "rich and successful as a result of your own work and not because of family money" I used the well-known Cambridge's dictionary definition of the word, and instead of approval ("acceptance of the statement") I got 4 negative points in this thread, for no reason.. ps. This is semantics. Your family bought you food, gave you other goods and so on when you were young. The point is in the details.

Use styrofoam.. https://en.wikipedia.org/wiki/Polystyrene

Sure. The one who complained about Musk and government cooperation..

Isn't it the same as in my example with trading satellites delivered into space for money? i.e. the government pays to lift xxx tons of something for yyy amount of money, instead of NASA.. ? We have more than a dozen such services at the moment, unfortunately.. It is not the point. The issue is what someone understands by "self-made billionaire." I have expressed what most people in the world mean by it.

People buy stuff somebody produce.. Without buyers, fortunes cannot grow.. IOW, how can you literally do it yourself if you rely on customers? If I bought/mined 1000/10000/100000/1000000 BTC 15 years ago, am I a sell-made millionaire/billionaire? Depends on the country.. ...if someone has earned several hundred million dollars from PayPal alone and has gained a globally recognized position, such a person is in a slightly different position than an ordinary John Doe, if we are talking about receiving government investments after completing a several dozen-page contract with the government.. ps. I feel uncomfortable in the position of Elon's advocate.. Let's invite him here on the forum. After all, he is a physicist..

"Self-made millionaire" means that someone did not get millions from his parents. Heritage them. "Self-made billionaire" means that someone doesn't get billionaires from his parents. And that's it. The real way to get millions or billions is under the rug, which you don't have access to. Now you (plural) came up with a new definition that self-made billionaire cannot get money from anybody else or government.. They how can they get it otherwise? Or how can you get any money? You (scientists) depend on government subsidies the most... I bet Elon would survive collapse of government subsidies.. unlike a regular scientist who rely on it on a daily basis.. The whole thread is bizarre for me.. as it is about semantics.. A long before Elon even imagined anything he had milllions from selling PayPal..

So your post is actually an accusation of many crimes on both sides, if the government builds someone else's factories with government money, so it's fraud.... Did you come to the FBI with your claim of a crime being committed by the government and a private company? If they build a factory for $1B and sell it for, say, $2B to a private company, they will make $1B. So the whole construction of the factory was an investment.

..I bow before your eloquence..

..about lack of consistency in statements, mutually contradictory statements over the years, change of mind depending on who is asking the questions etc. etc. ... I have no idea what this has to do with the so-called "cancellation culture." OMG, are not you the same, toward the people who claim that the Earth is flat? You "cancel" them, and they "cancel" you.. Two groups, have no discussions etc. etc.

No. Not exactly. Organisms that use photosynthesis to create food absorb photons in certain visible ranges and use them to break down CO2 and H2O molecules to produce the compounds they require. https://en.wikipedia.org/wiki/Autotroph Typically, energy flows from the source, which has a higher temperature, to the body, which has a lower temperature. The human body temperature is about 36.6 C, and the ambient temperature is typically lower, so we warm the environment. Green parts of the plants, which are designed to absorption of the photons (not green one range!), are absorbing photons, so they are not absorbed by something else. The absorbed photons (by whatever) are re-emitted at lower frequencies, such as infrared, and absorbed by something else, and the energy is retained on Earth. White rock reflects photons of visible light, while black rock absorbs photons of visible light. Some of them are re-emitted into space. In this way, the Earth can be seen in the range of infrared and other photons. Trees/plants absorb CO2 as they grow. CO2 absorbs photons. More CO2 in the atmosphere means more photons absorbed and more energy stored. They talk about CO2 because the more there is in the atmosphere, the more energy is stored on Earth, and the layman reads this as an increase in average temperature.

I think this is a great exaggeration that has nothing to do with the content of your post.. Inevitable editorial and printing errors, or made intentionally by angry "pranksters" (typesetter). Don't you know a parcel courier who is kicking packages (especially those marked treat with care)? I see it daily.. Nothing novel. Politicians have been using religion to gain more political power for thousands of years. E.g. Caesar intercepted non dismissable position as pontifex maximus (i.e. equivalent of the Pope) by bribery..

Hemodialysis (or blood transfusion) can indeed solve many problems if they are related to the presence of microorganisms, viruses or other (unwanted) chemical elements in the blood. But who said that autism is caused by a chemical imbalance in the blood? If it were so easy, it could be easily detected with blood analysis and resolved with drugs which fix the imbalance.

To check whether two objects of any shape have collided, the programmer can treat them as spheres at the first stage, i.e. calculate the min-max bounding box from all points, calculate the center point and the maximum radius. Then, if the distance between two such spheres is greater than the sum of the radii, the objects are too far away to be bothered with. However, if the distance between them is smaller, a less optimal, slower algorithm is performed to check the objects nearby. Several levels of spheres are used in 3D games. One sphere to cover the entire body. A second set of smaller spheres for all parts of the body. These are checked similarly to the previous step, but instead of comparing triangles with triangles (or polygons with polygons), because they are very slow for the processor, still spheres vs spheres are checked. People use KD-Tree (3D), Octree (3D) or Quad-tree (2D) to optimize such work. https://en.wikipedia.org/wiki/K-d_tree https://en.wikipedia.org/wiki/Octree https://en.wikipedia.org/wiki/Quadtree i.e. objects that are close to each other are in the same leaf or in a neighboring leaf. If an object does not move between frames, it does not need to be removed from the leaf and added to a new one. With a fixed number of elements, you can use voxels ("volumetric pixels"). https://en.wikipedia.org/wiki/Voxel Remember that in animation up to a certain level, you can reuse calculations from the previous frame(s) in future frames.

If you weren't in hot water writing this post, you would have read (or between the lines i.e. in good faith) that we were talking about the potential bombing of Tokyo.. so, I was not comparing Hiroshima vs Washington, but Tokyo vs Washington, i.e. destruction of capital city of 1st country vs destruction of capital city of 2nd country.. Which is quite obvious from my statement. Thus, the introduction of Hiroshima into this topic is out of place, as I was comparing destruction of two capitals..

I like your proposal. Politicians are like children. Want to put on the ritz, show off in the sandbox.. It is irrelevant.. Nuclear fission was discovered by German-Nazi scientists in 1938. https://en.wikipedia.org/wiki/Discovery_of_nuclear_fission ..and this led to Einstein's proposal to create an American version of it, before Nazis.. This is patently untrue. Are you suggesting a large cost? Compare how much NASA spent, and how much SpaceX spent, on the same task. Would the Americans surrender if Washington was destroyed? https://en.wikipedia.org/wiki/Burning_of_Washington ..it could have been done anywhere and none of the living observers would have understood what actually happened.. This statement is silly..

..everyone here understands that your understanding of physics and chemistry is petty.. ..doesn't burn because there is no Oxygen. Rockets have Oxygen in their fuel tanks, so..

Use a lighter and check again...

To avoid spending the next 30 years with a home loan?

..at least you will have a chance to learn something unknown and have fun.. Plugging in a ready-made solution and voila it's no fun..

Mechanical analog timer, such as: will be a PITA because you will have to rewind the wheel every time the previous cycle ends.... e.g. 48h The Arduino method will work as long as there is power (if there is no power, the plants also have no light anyway).

You can purchase an Arduino module with RTC (real-time clock) or even an Arduino clone with built-in RTC or software emulated RTC. ESP8266 has built-in WiFi ($8 cost) https://forum.arduino.cc/t/setting-the-esp8266-internal-clock/680099 If you keep it online via WiFi, it can automatically update the time. The ESP8266 is much smaller than a typical Arduino and does not allow external expansion modules to be connected on top of it. For basic work you don't need them anyway. But there are cool extension modules with built-in SD/SDHC reader/writer with built-in RTC. This one will work with the ESP8266, because it is not a plug-in from above on the Arduino. Why you may need it? Writing logs, reading the program, when to turn on the lights or whatever you want to control. Reprogramming via SD/SDHC without touching the C/C++ Arduino source code. Arduino with WiFi can be accessed by web browser: https://www.google.com/search?q=set+up+http+server+arduino For example, instead of saving SD/SDHC or reprogramming, it can be done from the phone's web browser.

It would be cheaper and more flexible to buy a $5 Arduino clone. e.g. https://www.ebay.com/itm/145160861832 and relay module for $1.5 e.g. https://www.ebay.com/itm/354746987710 You can then control any 110/230-volt electrical system and turn it on or off on demand using a hand-written C/C++ program that you put on the Arduino board. Sample code in the video below. It is very simple. An 8-channel relay for Arduino costs $6 here, so you can control up to 8 different electrical systems with different parameters. https://www.google.com/search?q=how+to+use+relay+arduino e.g.