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  • - Welcome to Introduction to Economics.

  • You are about to become an economically-literate person.

  • You might not realize this, but you've always

  • been an economic actor.

  • When you've decided to spend your time doing one thing,

  • you might have foregone being able to do other things,

  • that's an opportunity cost.

  • When you decided to buy something,

  • you might ask yourself, why did I pay that price?

  • Would I pay more or less if there were more of that thing?

  • Would I pay more or less if there were more mes

  • who wanted to buy that thing?

  • All of a sudden, you're getting

  • into the ideas of supply and demand.

  • As we go into these lessons, we're going

  • to dig a little bit deeper at a little bit

  • of math, a little bit of visualizations,

  • where we'll see that these simple but very powerful

  • frameworks apply to things as complex as economies.

  • The entire academic field of economics

  • is studying how things should be allocated

  • when there's not enough for everyone

  • to get as much as they want, that's known as scarcity.

  • How do you allocate scarce resources?

  • And to do that, you have to make trade-offs.

  • We're also going to learn about concepts of trade.

  • Why is trade good?

  • Ideas like comparative advantage,

  • but also why trade might not always

  • be in everyone's interest.

  • And as we go into these and we study things

  • like supply and demand, perhaps most importantly,

  • we're gonna start to learn to think like an economist,

  • where instead of just thinking about things

  • like prices and scarcity, and supply and demand,

  • and everyday language, we're gonna think

  • about how do we model them?

  • Because once we can model them and think

  • about them visually and mathematically,

  • we can come to interesting and rigorous conclusions.

  • Economics is sometimes called the dismal science,

  • which some might view as a bit of an insult

  • to the field, but I view it as a compliment,

  • because what's interesting about economics,

  • it has some traits that make it a little bit more

  • like traditional sciences.

  • We're going to use some mathematics,

  • we're going to do some diagrams, we're going

  • to be thinking systematically about things.

  • But it has another aspect of it

  • that is a lot like the humanities.

  • We're gonna talk about how humans act,

  • and especially how they act in aggregate.

  • Even as we look at these models

  • and we try to understand things mathematically,

  • we're always going to be asking ourselves,

  • well what assumptions did we make to do that?

  • Is that true, are all humans rational

  • when they make these decisions?

  • Or are there animal spirits that get worked

  • up where we sometimes do irrational things,

  • where as a group, it actually could

  • be a little less predictable

  • than the mathematical models predict.

  • So this is going to be a fun beginning to our journey.

  • And like always, if you're interested

  • in this topic and you want to go deeper

  • and you want to get practice with immediate feedback,

  • you could look at all of these lessons at khanacademy.org.

- Welcome to Introduction to Economics.

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A2 economics trade demand scarcity supply pay

Intro to Economics - Course Trailer

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    林宜悉 posted on 2020/03/27
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