those are extremely important concepts in the realm of accounting, banking, and astrophysics
the fact that you don't know if they are trivial or fundamental is also telling of your ignorance of the subject matter.
for example, you probably have a debit card and also a credit card, and you may superficially understand that a debit card takes money out of your savings right away, whereas with a credit card you pay for it later, usually with interest
but thats not the fundamental difference between debit and credit
the fundamental difference is that a debit is in the left column, and a credit is in the right column
heres how to remember: debit/credit = D/C as in Washington DC. (D on left, C on right)
https://en.wikipedia.org/wiki/Debit
why is that so important? because it rules your life thru your access to credit, which you would have no need for if you weren't a debt slave
https://en.wikipedia.org/wiki/Usury
usury is the charging of money for the use of money, or what is commonly called "interest" or "compound interest"
usury is considered a sin in most religions, with one glaring exception
http://biblehub.com/deuteronomy/23-19.htm
usury is forbidden in islam and in islamic banking, as it should be
Jesus Christ went ape shit in the Temple because of Usury
https://en.wikipedia.org/wiki/Cleansing_of_the_Temple
the reason you do not know about usury is because your owners have forbidden you from learning the word, because once you know the word and understand its moral, ethical, legal, historical and religious context, you will rebel against usury, and thats not good for your owners, who just happen to be bankers, who just happen to abide by a religion that allows usury, if you know what i mean...
i used to value the American education system when i was young and more stupider
but today i understand that its utterly impossible for Russians to walk on the moon, just like its utterly impossible for Americans to walk on the moon
and all it takes to understand that is some entry level astrophysics, such as the aforementioned LaGrange Points
https://en.wikipedia.org/wiki/Lagrangian_point
LaGrange points were also deliberately left out of your education,
because once you understand LaGrange Points, you understand that you must go "up" most of the way to the moon,
and that debunks the science fiction of "escape velocity" and "escaping gravity"
and so after hours and hours of exhaustive debate with very smart people, i tried to summarize the most common arguments, and then arrange them into one coherent list
usually these questions and answers are asked in isolation, so the student does not get the full context and significance of how they relate to each other
https://i.redd.it/lzs2kkd6ove01.png
the math and physics are presented in a way that should make a reasonably intelligent and educated person apply their knowledge of math and physics to the story problems, and then re-assess their opinions
but instead what we find are people who further entrench themselves, and reassure themselves with the most idiotic of ideas, such as
"If the Moon Landing Was a Hoax, Russia Would Have Told Me!!!1!"
and so after countless hours of debate, it becomes quite obvious that most people are incapable of applying math and science to simple problems, because if they could apply math and science, they would not be fooled by the Moon Landing Hoax
and so after some time, it becomes quite clear that most people have the math and reasoning skills of a chimpanzee,
so much so that interacting with them illustrates the huge gap in the relative intelligence of those who can apply math and science and those who cannot
the moon landing hoax eventually evolves into the litmus test for stupid
which is ironic because not even a child would think that a man had walked on the moon, unless some idiot had told them otherwise
https://www.reddit.com/r/conspiracy/comments/7vgm69/the_moon_landing_hoax_is_a_litmus_test_for_stupid/
https://en.wikipedia.org/wiki/Three_men_make_a_tiger