On Jan 6, 2021, the always stellar Mr @deepakshenoy tweeted, this:

https://t.co/fa3GX9VnW0

Innocuous 1 sentence, but its a full economic theory at play.
Let me break it down for you. (1/n)

On September 30, 2020, I wrote an article for @CFASocietyIndia where I explained that RBI is all set to lose its ability to set interest rates if it continues to fiddle with the exchange rate (2/n)
What do I mean, "fiddle with the exchange rate"?

In essence, if RBI opts and continues to manage exchange rate, then that is "fiddling with the exchange rate"

RBI has done that in the past and has restarted it in 2020 - very explicitly. (3/n)
First in March 2020, it opened a Dollar/INR swap of $2B with far leg to be unwound in September 2020.

Implying INR will be bought from the open markets in order to prevent INR from falling vis a vis USD (4/n)
The Second aspect is now, that dollar inflow is happening, and the forex reserves swelled -> implying the rupee is appreciating, RBI again intervened from September, by selling INR in spot markets. (5/n)
https://t.co/9kpWP7ovyM
These interventions in the currency market to stabilize INR has a very adverse effect on the macroeconomic policy.

Which is what the subject of my Sept 2020 essay with @CFASocietyIndia was. (6/n)
What did the essay say?
This:
Consider three legs of a stool of an economy-
a. Ability of Dollar to flow in when excess in global economy
b. Fixed Exchange Rate
c. Ability to set interest rates (7/n)
This stool will always be unbalanced (unlike what I showed above).
You can choose any 2 of the 3 legs.

Choose : controlled interest rate (and hence low inflation) and fixed INR/USD rate, you cannot have an open economy.

Which India was till 1992. (8/n)
Or choose, open economy and an ability to set Interest Rates, you cannot have fixed USD/INR.

INR will fluctuate around.
Which India has adopted in the recent years. (9/n)
This theory is called Mundell-Fleming theory - or Monetary Trilemma.

Many famous currency bets were made because central banks sought to ignore this theory. (10/n)
A nice 60 second video is here: https://t.co/3qgIS5skaV
(11/n)
So what now?
Because RBI has chosen to have a 'fixed exchange rate' (or at least as fixed as markets would allow) and an open economy, it is losing its influence on setting the interest rates in the market (12/n)
And that is why, ladies and gentlemen - the cost of 90 day T-bill has inched lower than what RBI sets as polcy rate
(13/13)

Thank you!
The original article is here :
https://t.co/202uXpI5Hb

More from Economy

$600/wk Unemployment Insurance cannot deliver the benefits of a $600/wk Job Guarantee. From the outset, I should say JG is not a replacement for UI, no matter what you may have heard. I’ll get to this later, but read this long 🧶 w/ that in mind.


Automatic stabilization: Both $600/wk UI and JG will provide counter cyclical spending. But UI will be weaker. Counter-cyclical stabilization is not just about the absence of income. It is also about the transmission and structure of economy

Firms don't like to hire the unemployed. Mass and long-term unemployment make the problem worse. JG would recover labor markets much faster than a UI of the same amount, both b/c of the higher direct, induced & tertiary employment effects & b/c of private firm hiring preferences.

JG stabilizes spending patterns better. Uncertain job prospects may mean more cautious spending from the unemployed compared to those w/ guaranteed jobs.
UI is temporary, which makes matters worse. Even if it were permanent, it still won't resolve the problem of job scarcity.

Nations who once achieved tight full employment through active labor market policies demonstrate that unemployment does NOT fluctuate the same way it does w/o them. Direct employment, ELR type policies diminish drastically/even eliminate these amplitudes (eg postwar Japan/Sweden)
1/ To add a little texture to @NickHanauer's thread, it's important to recognize that there's a good reason why orthodox economists (& economic cosplayers) so vehemently oppose a $15 min wage:

The min wage is a wedge that threatens to undermine all of orthodox economic theory.


2/ Orthodox economics is grounded in two fundamental models: a systems model that describes the market as a closed equilibrium system, and a behavioral model that describes humans as rational, self-interested utility-maximizers. The modern min wage debate undermines both models.

3/ The assertion that a min wage kills jobs is so central to orthodox economics that it is often used as the textbook example of the Supply/Demand curve. Raise the cost of labor and businesses will buy less of it. It's literally Econ 101!


4/ Econ 101 insists that markets automatically set an efficient "equilibrium price" for labor & everything else. Mess with this price and bad things happen. Yet decades of empirical research has persuaded a majority of economists that this just isn't

5/ How can this be? Well, either the market is not a closed equilibrium system in which if you raise the price of labor employers automatically purchase less of it... OR the market is not automatically setting an efficient and fair equilibrium wage. Or maybe both. #FAIL

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