MigL

Gravity does not have a 'speed'. Gravity is dependent on the mass/energy of the system, and since mass/energy cannot be created or destroyed, its gravity is always there. What does propagate at the speed of light ( or any information ) is changes to the gravitational field and gravitational waves.

Most people who start off punching kittens, grow up to be serial killers.

No, scientists don't 'claim to assume' anything. Most scientists don't use assumptions as the foundation for their theories. They start with observational evidence. My advice to you is to do the same.

Since gravity s negative there must be negative mass/energy ? If I owe money, does that mean there is negative money ???

Self sustaining nuclear fusion, that can provide almost limitless energy, is only 8 minutes away. ( or 93 million miles/150 million kilometers/one AU )

I does make you wonder, however, how some people on this forum can argue that the Supreme Court is not a political entity, and interprets laws acoording to the Constitution, and not political leaning. I would argue that your 'checks and balances' are severely screwed up if he doesn't, or isn't forced to, recluse himself

... and sometimes, people can't live with themselves, or look in the mirror, when they do nothing to retaliate against the person who did harm to their loved ones. Both can leave emotional scars. Some deny this, and claim to be virtuous, while others know themselves, and that we are all animals. ( thought I'd contribute my 'two cents' after 26 pages )

Astronauts, airplane pilots, counter-terrorists, Formula One drivers, army officers, etc. Don't forget drone pilots ...

I think you may have missed Sensei's point, Swansont. It is not about the difference between reality of war and playing games, nor about escalation, but rather, about letting the Russian people know that their Government has put them at war with Ukraine, and is hiding that information from them. As he mentions, a lot of Russians, with little or no information about the outside world and the destruction being carried out ( by their forces in Ukraine ), truly believe Russian forces are on a 'peacekeeping' mission, or liberating Ukraine from a NAZI Government.

Sensei, get a life 🙂 . Don't do your banking, or other sensitive activities on your phone, or computer. Go down to your local bank and greet the lovely tellers working there. More importantly, don't invade another country using cell phones as communication/command.

These advances come about by the limited application of uantum Mechanical thinking to purely classical ideas. Makes you wonder how many 'secrets' a full Quantum Gravity theory will unlock.

Even vaccines work that way. They provide a blueprint ( or a map, if you like the GPS guided bomb analogy ), so that you body's own defenses can target the specific intrusive virus, with antibodies.

The concept of 'value' has no meaning unless you specify to whom. There is no such thing as 'intrinsic value'.

I remember when we used to discuss science. Now we discuss the differing definitions of 'chicken' and 'egg'. Personally, I like eggs more than chicken. ( over easy, so I can dip my toast )

There is nly one rest mass, that being measured in the rest frame. That is the only mass I'm considering. If you were sitting on a planet 13 Billion years ago, and it underwent a linear downscaling of 1000, of the type you propose ( 1000 times smaller and 1000 times less massive ), it would now be 1000000 times more dense, and you could find yourself sitting on the event horizon of a Black Hole. Without any cause, simply the passage of time. IOW, physical laws are no longer invariant with the passage of time. That would be a strange universe if physical laws could change at any moment.

That's why I try my best not to be 'sociable'. Yes I do !!!

What we have gotten from you is that size reduction of atoms works, and mass can reduce linearly, because atoms are mostly empty space. That 'empty' space, however contains fields, such that the mass of a hydrogen atom is composed of about 2 % from the rest masses of its three quarks and one electron; the other 98 % is chromodynamic and electrodynamic binding energy. Reducing the radius of a sperical mass, while keeping density the same would result in a mass of 1/8 the original. If it weighs 1/2 the original, as you propose, then you have added/created binding energy, even if the number of constituent particles remains the same, and have effectively increased the density. Since density can be a parameter for such things as Black Hole formation, it would also be a factor in large scale cosmological structures.

I just read the posts in the other thread about the war in Ukraine, that Facebook is allowing posts advocating violence against Russians an d V Putin. This may be well intentioned, but is further politicising social media, and, in my opinion, not a good move. It would be a 'slippery slope' argument, but what happens when they start doing that with other issues related to Politics and social agendas ?

Not sure. But our Canadian Government talks big when it comes to addressing AGW, but does very little. I am seriously considering going electric for my next vehicle, but unless the Government re-invests gasoline taxes and carbon taxes into the infrastructure needed for EV operation in a country as 'distributed' as Canada, it may turn out to be a very impractical decision.

Absolutely ! Social media's algorithms feed your biases and like opinions back yo you, re-enforcing them. Like a confirmation bias feedback loop; and the more sensationalist, the more amplification. A large majority of people get their news from such social media sources. What could possibly go wrong ? ( I am not on any social media, nor do I plan to be )

Reports of a lot of Russians fleeing the oppressive Putin regime. Finland is receiving quite a few. If he is still around in 10 years time, will V Putin then be able to say "We are invading NAZI Finland to protect our Russian speaking brothers from oppression."

Supersymmetry is now fairly old. ( it was about 10 yrs old, when I first read about it in the 80s ) That is what happened with Sstring/M theory. Unfortunately, in these areas, theory has vastly outpaced observational capabilities. Sometimes beautiful math isn't enough. ( but you insights are instructional and always valued )

Politicians make bad laws most of the time; makes you wonder what they get paid for. Then if a case is brought up, the Supreme Court has to decide whether it is Contitutional. The political leanings of SCJ play a great role in this decision, and why each party tries to fill vacancies with politically like-minded judges. ( to tie it into another thread )

You don't seem to want to address the problems pointed out by forum members. Simply put, in a 3Dimensional space, length and mass don't scale in a way that keeps the Physics unchanged. You either have the violation of mass/energy conservation at the local level, along with ( as you claim ) violation of time symmetry ( Noether's theorem ), yet we know conservation laws hold locally, and there are time reversible processes. Or, you have gravitational changes at the large, or cosmological, scales, such as the laws of gravity being different at cosmological distances, such as galaxies being differently shaped or stars burning hotter/cooler, etc., yet we don't observe any of that either. So other than a mental exercise in "What if ?", what exactly are you hoping to accomplish ?

You can understand the science behind AGW, and be fully aware of the consequences, yet, when you see things like "The world will end in 20 years" or "There will be no humans left", you reaize there are nut-bars on both sides. What the Ukraine situation has proven, is that people are willing to endure the pain of high gas and energy prices, if they perceive it as a good cause. But, when all that happens during shortages, is oil companies lobbying the governments to increase profits or production will decrease even further, to the tune of astronomical profits of over $20 billion in 2021 for companies like Shell or Mobil, you start asking why we are enduring the pain for them to profit. Or why J Biden is dealing with another ( just as bad ) dictator in Venezuela to make up for the losses from the previous dictator that supplied us, yet refuses Canadian oil even though we have , and use, technology to produce it just as clean. By all means have a fair tax on fossil fuels, but re-invest this tax on infrastructure to facilitate the use of electric vehicles. Off-shore wind farms, Solar panel farms in the South-west, along with distribution grids. And major investments in nuclear fusion.