Joon Sung Park ✓

@joon_s_pk · Palo Alto, CA · joined 05 Aug 2010

CEO @simile_ai. Building simulations of society. CS PhD @stanfordhci + @stanfordnlp. Oil painter.

21 000Followers

1 265Following

745Posts total

196KViews on collected posts

Against accounts of the same size

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

Median views23 168this account2 896median for 10K–100K

Reach, %110.32%this account9.51%median for 10K–100K

Engagement, %1.08%this account1.56%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	23 168	2 896	8.00×
Reach (views ÷ followers)	110.32%	9.51%	11.6×
Engagement rate	1.08%	1.56%	0.70×

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

52.6K30 Jul

31K26 Aug

83.7K29 Aug

15.4K

5.7K30 Aug

7.7K2 Sep

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

0.74%30 Jul

1.09%26 Aug

1.37%29 Aug

0.79%

1.63%30 Aug

1.08%2 Sep

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.56%.

What the audience does

Likes83.2%1 952 in total

Reposts4.9%114 in total

Replies3.8%90 in total

Quotes0.6%13 in total

Bookmarks7.5%176 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.

Latest posts

Me to @msbernst last year: What if we build a simulation company together 7.7K views · 74 likes · 5 reposts · 4 replies 02 Sep 2026 A lot of chatter about agent swarms. Beyond the obvious social implications, they raise an interesting question about the nature of intelligence: Will the thinking machines of the future be a single model, or societies of agents? The former, if limited memory and forgetfulness 5.7K views · 77 likes · 5 reposts · 11 replies 30 Aug 2026 Even within individuals, certain traits are remarkably persistent. Think risk tolerance, values, conscientiousness, among others. Understand these fundamental traits deeply, and you can simulate people faithfully. Everything else is an expression of those traits. 15.4K views · 109 likes · 5 reposts · 6 replies 29 Aug 2026 This is also how I study comms. People don’t change. Every interaction between people has happened before You can simulate reactions by literally knowing what happened last time, even if last time was centuries ago 83.7K views · 1.1K likes · 41 reposts · 33 replies 29 Aug 2026 Found in the @simile_ai office: @msbernst and @percyliang realizing, after over a decade, that they’ve been twins all along https://t.co/H5XBk31li6 31K views · 320 likes · 10 reposts · 5 replies 26 Aug 2026 Five months ago, we launched @simile_ai with the belief that simulation would become a new way for the world to make decisions. Today, that belief feels less like a thesis and more like the beginning of a new category. Incredibly proud of my team. We are just getting started. 52.6K views · 305 likes · 48 reposts · 31 replies 30 Jul 2026