MigL

I have to differ... These guys mean well, but they are telling you methods of memorising information. That might work with Biology, and somewhat with Chemistry, but it will not work with Physics or Math, as they inherently involve 'problem' solving. There are very few things to memorize, but you need to know 'how' to think. I've had exams where you could take the exam home, use cheat sheets and calculators ( late 70s, early 80s, no PCs ), or even get your grandmother to help you; IOW, either you know it, or you don't.

Ants, no problem. Don't change your eating/cleaning habits and cockroaches are next.

Not sure I know what you mean. Space-time and reference frames are both mathematical constructs; coordinate systems, if you will, where events happen. Maybe you could re-phrase the question ? And I'm sure I have no clue what Kartazion means. As to a TOE, I'm not even sure there can be such a thing; are you sure you don't mean Quantum Gravity ? In very simple terms, Quantum Gravity is a quantum field theory with expected Gravitons as field excitations. As such, it needs to be re-normalizable to get rid of the infinities that arise from all virtual graviton interactions. Unlike QED, QCD and QFD, gravity is self-interacting; the infinities resist re-normalization and do not go away.

I don't care; I still want a History forum. I ( and CharonY ) are constantly having to sneak in historical tidbits into other forums. Please, please, please.please, ...

Me too. No vision in my left eye. Have to keep my eye moving to get any sense of depth perception while driving, or else the bird dropping on the windshield looks like a boulder in the middle of the road,

Yes, but the mechanism is absorption of IR radiation ( emitted by the Earth ) by CO2 intermolecular bonds, and re-emission ( some back towards Earth ).

All of Newton's equations of motion were derived using calculus. As a matter of fact, he invented the calculus for just that purpose. ( also, independently, by G Leibniz ) Newtonian mechanics, while not as 'sophisticated as Lagrangian or Hamiltonian mechanics, can still calculate the 'fall 'of an artillery shell at several miles distance, or even enable putting a rocket in lunar orbit. So, I would say, quite useful. Your criticism of calculus, on the other hand, totally useless.

If I had to, I would say a conservative Liberal. Not a liberal Conservative, like a lot of American Democrats. Nor a conservative Dumb-ass, like a lot of American Republicans. ( notice I said a lot, not all )

When people talk about 'flat' or Minkowsky space=time, they mean uncurved, or, with no appreciable curvature. Not 2 dimensional !

I would hate to be sitting on a bank watching this tide roll in https://www.msn.com/en-ca/weather/topstories/astronomers-capture-death-by-spaghettification-as-black-hole-shreds-a-star/ar-BB1a1COG?ocid=msedgntp One caveat ... "The idea of a black hole 'sucking in' a nearby star sounds like science fiction." and it is. BHs don't 'suck', they just gravitate.

At first I thought this was related to Phosphorus OxyChloride, POCl3, which is pretty nasty stuff, but I have some knowledge of. But it turns out Copper OxyChloride, Cu2(OH)3Cl is a readily available fungicide and nutritional supplement ( ? ) otherwise known as Copper Chloride Hydroxide, and can even be mined in its crystalline form. Why go to the trouble of synthesizing it ? This link may provide some guidance … http://www.sciencemadness.org/smwiki/index.php/Copper_oxychloride See the synthesis section.

Every body should investigate opposing viewpoints. Inform yourself, The alternative is ignorance, and as Phi points out, ignorance is easily manipulated. From your thread on "Who to trust", I quote myself … "If in doubt, don't rely on one person's opinion. It is easy enough to get multiple opinions to guide your decisions."

Good experimental practice is to ( try to ) isolate all variables which are not pertinent to the effect you are investigating, if you wish to draw any valid conclusions from your experiment. At best, this is a cheap attempt to 'trigger' elements of both groups into a confrontation.

Thank God he didn't actually go out and kiss all the people in his audience in Florida, like he threatened to do.

I didn't. I have a veg and herb garden … and a lemon tree ( in Canadian weather ). And I can do reasonably good tile and even concrete work ( hey, I'm Italian-Canadian; that's what we do ).

If in doubt, don't rely on one person's opinion. It is easy enough to get multiple opinions to guide your decisions. This doesn't only apply to medical opinions.

As for basic English and Math, keep in mind that every opportunity you pass up to learn something, closes a door in the long hallway of life. Keep as many options ( and doorways ) open as possible. Maybe A Einstein did learn how to plaster, so if he failed with GR, he could always do house renovations.

If you guys had bad experiences, I feel for you. I don't recall a single teacher that I've hated, although there were a few bad teachers. Maybe I just got lucky, but quite a few of my teachers and Profs actually inspired my love of learning.

Ah, but I did... Part implies fractional cause, not the whole cause. And a quick look at the OP shows that we are both wrong about the intent of the OP The OP seems to imply barriers within academia. And also comments that some forum members make about other ( new ? ) members who may not have had the opportunity for an equivalent education. I chose to address the second option, in my first post, and gave examples of forum members who have done well through a good attitude and hard work ( including the O Poster in the Physics forums ), and gave advice regarding the attitude to have , on this forum, to get some learning opportunities out of it. It went in different directions after that. Perhaps you are correct, it wouldn't be the first time I failed to make myself understood by someone.

Have you caught Dimreepr disease ? Don't leave me hanging; can you give a more elaborate answer/opinion ? Sure, there are anecdotal stories where some motivated but disadvantaged kid can't get an education. But there are also many where motivated but disadvantaged kids do get an education ( my story for one, in a previous post ). So, if we agree on the disadvantaged part, maybe we should start questioning the 'motivation' ( or lack thereof ) part.

And all I'm saying is that removing 'barriers' only gets you part way there. I think the bigger challenge is making people want an education. To paraphrase Venus Flytrap... Education is not being forced on anyone. It's yours for the taking, but you have to want it. complementary lesson about atoms with each viewing.

I'm still not sure what you are asking for, since you keep throwing different scenarios out. If you are asking about the limit formulation of a derivative ( with x cannot equal 0 ) that is introductory differential calculus, so I find it hard to believe you've been doing it for 20 years. If we define f(x) to be a function of x, the derivative function of f at x is given by: df (x) = lim h→0 { f(x + h) − f(x) }/ h If the limit exists, f is said to be differentiable at x, otherwise f is nondifferentiable at x. If y = f(x) is a function of x, then we also use the notation dy/dx to represent the derivative of f. You should also note that dy and dx are not numbers but differentials. Sorry about the lack of LaTex.

Maybe you don't realize how many models of gravity there actually are... https://en.wikipedia.org/wiki/Alternatives_to_general_relativity Quite a few reduce to, or are equivalent to the well established GR. What are they describing ? GR alsoceases to have valid predictive power at certain limits, such as singularities. Does that mean reality ( like snooker balls and trampolines ) also ceases to exist at those limits ? Or has the MODEL exceeded its applicable range.

I agree with your points about poverty levels, CharonY, and even I would like to see free ( or at least subsidized ) education for all who want it. But that wouldn't solve the problem of bad attitude, and not putting forth the effort. On the other hand, someone like Markus ( and I don't know his financial situation or why he didn't obtain a formal education ) with good attitude and self driven work/effort managed to become the leading expert on GR on two different Forums I've participated in ( equalled only by Dr.Rocket ) The first cause for concern was a 1965 report by a Democrat D Moynihan. https://en.wikipedia.org/wiki/African-American_family_structure It is areal phenomenon, not imaginary. But its cause is rooted in systemic poverty of Black Americans.

With a MATHEMATICAL model. Does that change the fact that it is, in fact, the model, and not the reality ?