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Atif Mian

@AtifRMian

20 Oct

Students wanting to do a PhD in economics are often told that math is important

here's why (and some important caveats) ...

Markets need to balance out on average, e.g. the total purchase of cotton must equal the total production of cotton by farmers.

There are thousands of such markets and they must all balance out! How does this happen?

It is not possible to keep track of all this without resorting to mathematics, which is a tool for imposing rules and logic that nature dictates must hold.

Then there are many practical economic problems that at their core are mathematical riddles.

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Atif Mian

@AtifRMian

17 Oct

Why study economics?

It is a science that helps us understand how we are all connected in a mutually-reliant ecosystem

e.g. one person's supply is another person's demand ...

economics gives us insights into how we can design this ecosystem so we help each other become better off, or how we can screw things up in a mutually destructive manner

At its finest, economics is about making the sum bigger than its parts

perhaps contrary to some people's perception, some of the deepest insights of economics are about how selfish and individualistic behavior can be destructive for the broader society - precisely because we are all connected

young minds should consider studying the subject

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Atif Mian

@AtifRMian

20 Aug

One of the hardest questions is what makes societies change?

"functioning" societies take care of each other, develop trust, tend to work for the common good - and as a result become richer

"mis-functioning" societies seem to do everything in reverse - and as result remain poor

Both types of societies are stable, meaning they can go on like that for long periods of time

The obvious question is how can one change a mis-functioning society into a functioning one? How does change happen at the system level?

Obviously, no single answer here

But by construction, change will be hard - very hard.

Because the reason mis-functioning societies mis-function is that there are groups that are collectively in control, and they benefit from the mis-function

So change requires annoying these dudes, and they don't like that

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Atif Mian

@AtifRMian

15 Aug

One broad misconception about growth or development is that growth *requires* capital

That is not accurate: to first approximation, growth *creates* capital

some explanation ...

The most important ingredient, or requirement, for growth is productivity.

If productivity rises, firms and individual create a larger surplus that they can then deploy as capital, or investment, for even greater output.

This is the bottom line to keep in mind

Now, you might ask, but doesn't one need capital for boosting productivity?

Not really

Almost always, the constraints societies face have to do with organization, management, trust, rule of law, experimentation, institutions, innovation etc.

Read 7 tweets

Atif Mian

@AtifRMian

5 Aug

Big-data driven economic analysis has made remarkable progress over the last 10/12 years

This has huge potential IF policy makers were to harness its power effectively

I was in the middle of trying to understand the economic repercussions of the 2008 recession ...

but stuff you can do today with data is incredibly more powerful, and many young scholars are leading the effort

e.g. we can, in almost real time ...

figure out which groups and areas have been more impacted

track consumer spending at a very detailed and granular level

quickly estimate response to fiscal policies like stimulus payments versus unemployment benefits, credit policies like PPP and mainstream lending

estimate behavioral responses to outbreak of disease etc

Read 6 tweets

Atif Mian

@AtifRMian

28 Jul

@FT

This is the new not-normal normal

A majority of global 60T$ bonds yield near-zero to negative rate

@FT article says "investors blame the Federal Reserve". on.ft.com/39z1lHv

But that is wrong

Zero long-term rate reflects structural imbalances in the global economy ...

these imbalances have been rising over the past decades and reached a tipping point in 2008

The problem only got worse since then and hence the downward pressure on long-term rate continued

The Fed cannot raise long-term, or "natural rate", as it is sometimes called

The structural problem has to be solved elsewhere, e.g. rising inequality and high concentration of wealth

This would require serious re-tooling of the economy

The Fed cannot help much here

Read 4 tweets

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