this post was submitted on 26 Jan 2026
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Supply demand curves are usually drawn with straight lines.
never once in my economics education did they do that. not just because it's easier to draw a curve than a straight line, but because the shape of the curve defines the type of good. maybe your economics education was just... bad?
Type economics supply and demand curve into Google images for more data points than your personal experience.
ooo, everyday people (not economists) can put bad images up on the internet
This is from an encyclopedia. Here's another
Did your economics training teach you to ignore data?
let's talk about opportunity cost. did you learn that?
first: neither brittanica nor investopedia are run by or written by economists. those images were made, probably in excel first, they're terrible, and then considered done. how much longer does it take to get a set of curves that line up precisely in the center versus a set of straight lines that line up precisely in the center? especially when the point you're trying to illustrate with your diagram is not (a) the more realistic shape of the utility curves that define the supply and demand curves, but is in fact (b) the equilibrium point at the intersection. it takes a lot longer to get the curves right, right? and that's not the important part of the model! better to just save 15 seconds and use straight lines, you can illustrate the curves on another diagram
that is how economists think
that is why those stupid images are there.
Economists make it linear again.
real economists do better
Hilarious.
Check out the supply/demand Figure 4-8 on page 80
Economists can't handle non-linear relationships.
Prosecution rests.
what is it trying to illustrate in the model?
I've made my point.
The example text book you pulled of the shelf written by "proper economists" has the exact same linear S/D diagram I posted at the top of this thread.
so you can't figure out the point it's trying to illustrate by simplifying assumptions. tada!
https://lemmy.world/comment/21794751
let me give you some advice. read the text instead of just skimming for pretty pictures. maybe next time you won't fail your economics class
It seems you are the one who should have paid attention in class.
considering i'm the one who has experience in econometrics and you're arguing ITS ALL STRAIGHT LINES because you never got past that part, yeah no.
You have no academic experience. You can't even quote properly.
sure dude sure. keep making stuff up.
Making stuff up is literally what I just accused you of.
Only you have written "ITS ALL STRAIGHT LINES".
I'd accuse you of being an LLM but no-one would train something to score this many own goals.
You're so incredibly dumb, the flailing is hilarious. You wouldn't pass micro I, let alone macro.