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Do you use facebook?

Photo of a smartphone with the Facebook application open
Economics is greatly impacted by how well information travels through society. Today, social media giants Twitter, Facebook, and Instagram are major forces on the information super highway. (Credit: Johan Larsson/Flickr)

Decisions ... decisions in the social media age

To post or not to post? Every day we are faced with a myriad of decisions, from what to have for breakfast, to which route to take to class, to the more complex—“Should I double major and add possibly another semester of study to my education?” Our response to these choices depends on the information we have available at any given moment; information economists call “imperfect” because we rarely have all the data we need to make perfect decisions. Despite the lack of perfect information, we still make hundreds of decisions a day.

And now, we have another avenue in which to gather information—social media. Outlets like Facebook and Twitter are altering the process by which we make choices, how we spend our time, which movies we see, which products we buy, and more. How many of you chose a university without checking out its Facebook page or Twitter stream first for information and feedback?

As you will see in this course, what happens in economics is affected by how well and how fast information is disseminated through a society, such as how quickly information travels through Facebook. “Economists love nothing better than when deep and liquid markets operate under conditions of perfect information,” says Jessica Irvine, National Economics Editor for News Corp Australia.

This leads us to the topic of this chapter, an introduction to the world of making decisions, processing information, and understanding behavior in markets —the world of economics. Each chapter in this book will start with a discussion about current (or sometimes past) events and revisit it at chapter’s end—to “bring home” the concepts in play.

Introduction

In this chapter, you will learn about:

  • What Is Economics, and Why Is It Important?
  • Microeconomics and Macroeconomics
  • How Economists Use Theories and Models to Understand Economic Issues
  • How Economies Can Be Organized: An Overview of Economic Systems

What is economics and why should you spend your time learning it? After all, there are other disciplines you could be studying, and other ways you could be spending your time. As the Bring it Home feature just mentioned, making choices is at the heart of what economists study, and your decision to take this course is as much as economic decision as anything else.

Economics is probably not what you think. It is not primarily about money or finance. It is not primarily about business. It is not mathematics. What is it then? It is both a subject area and a way of viewing the world.

Questions & Answers

what is money
Emmanuel Reply
hy
Usama
Money refers to the exchange value of goods and services.
Mbye
can you more explain it?
Usama
money is defined as any legal tender use in the exchange of goods and services.
Emmanuel
we can say commodity. A tool of change..
Baki
Money is a tool which is use to fullfil our needs and desires in the shape of goods and services.
Usama
good definition.
Baki
how does indirect tax increase the total expenditure?
Madishez
I can't understand this type becousr it's difficult for me that's why could you help me
Sheikh Reply
how will demand question will be like in an examination
ekua Reply
demand supply cycle
Omkar
like questions
Omkar
or different types of demand
Omkar
based on societal class structure
Omkar
or the most common and basic demands
Omkar
Give a simple explantion of the LAW OF DEMAND?
IT Reply
Income elasticity of demand
Shaan Reply
income elasticity of demand
Adjei
what
Omkar
what is labour force
ademu Reply
Labour force is the number of people who are actively and presently working in a country to increase the availability of goods and services.
Mbye
It refers to the active population available for work at a going rate.
Daniel
labour force is the number of people who are active and present working in a country to increase the availability of goods and services
Deborah
The law of diminishing returns States that "all other things being equal as more and more of a variable factor(labour) is employed on a fixed factor (Land) ,marginal product initially increases reaches a maximum and there after diminishes or fall
samuel Reply
how does exceptional demand occur
Esther Reply
It occurs, due to certain reasons, but to make my answers brief. Exceptional demand occurs when our earnings change. As the law of demand says the higher the price the lower the demand. However no matter how high the price is the person will still purchase the good due to his level of income.
Mbye
opportunity cost definitions
Surur
What do you mean mean by opportunity cost definition?
Mbye
OK thanks for the answer
Esther
Opportunity cost, means, in order to get something, you sacrifice something
Taha
Opportunity cost simply means, sacrificing one commodity at the expense of another.
Mbye
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan
What is the scale of preference
Mbye
Esther👌
TSEKO
The law of diminishing returns
Mbye
Apply, PoE, Process of elimination, the 1st stage of production is not correct for the producer to produce because he has the option to increase his production level, so, eliminate that. In third stage, its not rational to produce because, Total output declines. Hence, it is only in the second
Taha
Stage, that the producer produces, also because, it is at this stage that the total output is maximum.
Taha
Hence proved
Taha
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan
plz help
Newtan
thanks
Surur
deference b/n aggregate demand and aggregate supply
Surur
ok a production manager should continue to use it inputs until MP reaches zero because at that stage it is called rational stage. And at this stage when a producer produce anything he/she will get more output, aside that too the Total product (TP) will also be at it maximum.
samuel
Exceptional demand occurs due to demand conditions, and when it does not obey the law of demand.
samuel
e
mukul
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan Reply
anyone help me Please
Newtan
does the richest experience scarcity?
elan Reply
how do you master a subject
elan
Yes, this is due to the fact that human wants are unlimited in number how ever he has everything his heart desires, he still have dreams of owning/having something else of a great value.
Tusajigwe
that's true,thank you tusajigwe
elan
why firm maximize profits when MC=MR
Abel Reply
The night before an economic exam you decide to go for outing instead of staying at home and studying for your exam.you get 50 percent on your exam as compared with the 70 percent that you normally score.
Muhammad Reply
join me
Abel
why do banks charge fees and charges?
Shirley Reply
What is Labour
Angela Reply
the service provide by the labourer is termed as labour.
Prtj
Meaning of Standard of living
Fazrat Reply

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Source:  OpenStax, Principles of economics. OpenStax CNX. Sep 19, 2014 Download for free at http://legacy.cnx.org/content/col11613/1.11
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