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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.
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Intro to Economics - Course Trailer

24 Folder Collection
林宜悉 published on March 28, 2020
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