Your bank pays you 0.38% and lends the same money back out at 6.76%. That gap is not a scandal, it is the entire business model, and MIT explains it in the first hour of a free course.
18.S096, lecture 1, taught by a guy who ran risk at Morgan Stanley. It opens with the boring definitions everyone skips, and the first real one is this: your deposit is a loan. You are the lender. Nobody asked you to negotiate the rate.
Now the part that actually costs money. The FDIC average savings rate right now is 0.38%. The best insured accounts pay above 4%. Same insurance, same country, same dollars.
On $20,000 that is $76 a year versus $830. The bank is not hiding this. It is quietly pricing the fact that you will not move the money.
The lecture is free and has been for over a decade. Watch the first 20 minutes and it stops being possible to hear a savings rate without doing this subtraction in your head.
Post your bank and what it pays you. Which one is robbing its customers the hardest?
The most famous equation in math says that if you walk halfway around a circle you end up on the other side. That is the entire content of it.
e to the i x is just a point walking around a circle, and x is how far you walked. Walk pi, which is half the loop, and you land on minus 1. Add 1 and you are at zero. That is the whole thing everybody prints on t shirts.
A Harvard professor named Benjamin Peirce once finished proving it and told his class it was absolutely paradoxical, that we cannot understand it and do not know what it means. Great lecture. Slightly less useful than saying it is a rotation.
Because here is what engineers actually do with it, and nobody frames it this way. Multiply two of those rotating points and the angles just add. That one property turns trigonometry into arithmetic, which is why AC circuits, wifi, audio codecs and every Fourier transform on earth run on it.
It sits on posters as poetry and inside firmware as a shortcut, and the firmware version is the one that pays.
Beautiful or overrated? Pick one and defend it.
@patrik_agentsAI The tragedy is that trigonometry is taught first and this is taught years later, if at all.
Half the identities I was forced to memorize at 16 fall out of one line here. Nobody mentioned that the easy version existed.
@Oleksan5705847 The auction detail people miss is that nobody bid $45 on their own. They bid because the guy before them did.
Same thing that prices a stock, a house, or a coin nobody can value. Everybody is quietly reading the last bid and calling it research.
@Ryomenex The sizing point is the one nobody wants to hear, because picking is fun and sizing is arithmetic.
Everyone can name a good company. Almost nobody can tell you what percent of their net worth is sitting in it right now, which is the only number that decides how the story ends.
@DaniilBuilds And the spread is widest at the biggest banks, which is exactly where people feel safest. Trust is the product being sold back to you at a markup.
@twelvepills12 Watching is the easy part. Moving the money is 20 minutes and one form, and that form is the entire filter between knowing this and benefiting from it.
Your bank pays you 0.38% and lends the same money back out at 6.76%. That gap is not a scandal, it is the entire business model, and MIT explains it in the first hour of a free course.
18.S096, lecture 1, taught by a guy who ran risk at Morgan Stanley. It opens with the boring definitions everyone skips, and the first real one is this: your deposit is a loan. You are the lender. Nobody asked you to negotiate the rate.
Now the part that actually costs money. The FDIC average savings rate right now is 0.38%. The best insured accounts pay above 4%. Same insurance, same country, same dollars.
On $20,000 that is $76 a year versus $830. The bank is not hiding this. It is quietly pricing the fact that you will not move the money.
The lecture is free and has been for over a decade. Watch the first 20 minutes and it stops being possible to hear a savings rate without doing this subtraction in your head.
Post your bank and what it pays you. Which one is robbing its customers the hardest?