Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲

@wwwojtekk · New York City · joined 10 Feb 2010

Economist, tax policy/inequality. Editor of @JPubEcon. Professional skeptic. Anti-illiberal. Tweets blend sarcasm and sincerity.

57 048Followers

1 021Following

67 522Posts total

125.4KViews on collected posts

Latest posts

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk14h

Concentrated wealth can overcome the free rider problem in public goods provision. I'm sure one can come up with other examples. Hypothetical externalities abound, running in all directions. 2.9K views · 15 likes · 1 reposts · 2 replies Open on X →

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk15h

That's supposed to be a criticism. Apparently, you're always supposed to study the relationship between eˣ and eʸ 54.6K views · 394 likes · 3 reposts · 5 replies Open on X →

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk19h

@a_rivero @MortenStostad what would qualify as a positive externality of inequality? 3K views · 1 likes · 0 reposts · 5 replies Open on X →

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk22 Sep

My impression from using claude code semi-intensively for a while is that there is no way to have output that's not garbage (sometimes in ways that are not immediately obvious) without good instructions and paying attention to what it's doing. Very much complementary to labor. 23.1K views · 402 likes · 36 reposts · 25 replies Open on X →

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk19 Sep

That may sound impressive until you realize that this is the equivalent to having a product that allows others to dig holes in your yard and for you to patch them. Negative value added socially. 12.1K views · 34 likes · 1 reposts · 2 replies Open on X →

Wojtek Kopczuk 🇵🇱🇺🇦 and 🇺🇲@wwwojtekk7 Dec 2025

PSA: I'll block you if your "insight" relates to the flags I like 29.7K views · 42 likes · 1 reposts · 7 replies Open on X →

Against accounts of the same size

5 posts from the last 90 days, next to the 10K–100K follower range. shown widely, but few of those viewers react.

Median views12 125this account997median for 10K–100K

Reach, %21.25%this account3.84%median for 10K–100K

Engagement, %0.63%this account1.52%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	12 125	997	12.2×
Reach (views ÷ followers)	21.25%	3.84%	5.53×
Engagement rate	0.63%	1.52%	0.41×

Others in this range → Compare with another account → How these benchmarks are built →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

29.7K7 Dec

12.1K19 Sep

23.1K22 Sep

54.6K23 Sep

2.9K

Last 6 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.17%7 Dec

0.31%19 Sep

2.03%22 Sep

0.23%

0.74%23 Sep

0.63%

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.52%.

What the audience does

Likes79.1%888 in total

Reposts3.7%42 in total

Replies4.1%46 in total

Quotes0.6%7 in total

Bookmarks12.5%140 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.