Ahh fuckit part of my @threadapalooza thread had a clear subtopic and wanted to be its own thread.

Here's the thread about "membranes" as a metaphor for groups of people.

15a/ Membranes. Monists go on about how everything is one, which is true in a sense but also have you noticed that some things are inside and some things are outside? The role of skin, or the walls of a house, or a windshield on a car, is it keeps inside in & outside out.
15b/ Membranes can be applied to groups, and we can talk about a few different kinds of membranes that you might see around a particular group of people:
- closed membrane
- closed web
- semipermeable membrane
- open network
15c/ Closed Membrane: eg a company, family or country. Maybe a way to join it, but you need an active & explicit invitation by the members, whether that’s a job application or a marriage or an immigration process. Lots of intentional community houses are also like this.
15d/ Closed Web: consider a friend group. You don't exactly need an invitation from everyone in the group to join, but you do need to make friends with *someone* in the group. Polycules (except polyfidelity) work similarly, usually.
15e/ Semipermeable Membrane: ~anyone can join; there might be a requirement like buying membership, but you can just do it. Or going vegan. Or there might be a requirement of actually showing up, like Kevin Kelly's description of the Camp 4 scenius: https://t.co/2OzvIg58K4
15f/ (note that semipermeable membranes do need to eject people sometimes, but only if the person’s presence is actively disrupting the group, either asshole-style or by undermining the norms, eg by arguing using blatant logical fallacies at rationalist parties)
15g/ Open Network: doesn’t have clear boundaries at all (not a membrane) and is more of a description of an emergent cluster in people-space. The region of twitter I hang out in is sometimes referred to as “strangely earnest twitter”.

https://t.co/doandfMsJF
15h/ How many ppl have heard of the phrase “strangely earnest twitter”, or identify with being part of it?

It existed before it had that name.

It overlaps with many other seemingly-unrelated twitter networks.

Rather than joining such a group, you find yourself in it.
15i/ There are probably more types than this, but this is an initial typology that seems helpful for thinking about the nature of groups. All of these types are necessary, *and* you're gonna have a bad time if there isn't clarity about the nature of a particular group/membrane.
Click below to return to the original @threadapalooza chain:

https://t.co/z4FO4Nacxu

More from Economy

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

You May Also Like

A THREAD ON @SarangSood

Decoded his way of analysis/logics for everyone to easily understand.

Have covered:
1. Analysis of volatility, how to foresee/signs.
2. Workbook
3. When to sell options
4. Diff category of days
5. How movement of option prices tell us what will happen

1. Keeps following volatility super closely.

Makes 7-8 different strategies to give him a sense of what's going on.

Whichever gives highest profit he trades in.


2. Theta falls when market moves.
Falls where market is headed towards not on our original position.


3. If you're an options seller then sell only when volatility is dropping, there is a high probability of you making the right trade and getting profit as a result

He believes in a market operator, if market mover sells volatility Sarang Sir joins him.


4. Theta decay vs Fall in vega

Sell when Vega is falling rather than for theta decay. You won't be trapped and higher probability of making profit.
This is a pretty valiant attempt to defend the "Feminist Glaciology" article, which says conventional wisdom is wrong, and this is a solid piece of scholarship. I'll beg to differ, because I think Jeffery, here, is confusing scholarship with "saying things that seem right".


The article is, at heart, deeply weird, even essentialist. Here, for example, is the claim that proposing climate engineering is a "man" thing. Also a "man" thing: attempting to get distance from a topic, approaching it in a disinterested fashion.


Also a "man" thing—physical courage. (I guess, not quite: physical courage "co-constitutes" masculinist glaciology along with nationalism and colonialism.)


There's criticism of a New York Times article that talks about glaciology adventures, which makes a similar point.


At the heart of this chunk is the claim that glaciology excludes women because of a narrative of scientific objectivity and physical adventure. This is a strong claim! It's not enough to say, hey, sure, sounds good. Is it true?
Margatha Natarajar murthi - Uthirakosamangai temple near Ramanathapuram,TN
#ArudraDarisanam
Unique Natarajar made of emerlad is abt 6 feet tall.
It is always covered with sandal paste.Only on Thriuvadhirai Star in month Margazhi-Nataraja can be worshipped without sandal paste.


After removing the sandal paste,day long rituals & various abhishekam will be
https://t.co/e1Ye8DrNWb day Maragatha Nataraja sannandhi will be closed after anointing the murthi with fresh sandal paste.Maragatha Natarajar is covered with sandal paste throughout the year


as Emerald has scientific property of its molecules getting disturbed when exposed to light/water/sound.This is an ancient Shiva temple considered to be 3000 years old -believed to be where Bhagwan Shiva gave Veda gyaana to Parvati Devi.This temple has some stunning sculptures.