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Post­mortems & Retrospectives

TagLast edit: 8 Feb 2021 11:08 UTC by Yoav Ravid

A Postmortem or Retrospective is a reflection on past actions with an eye to what went well, what didn’t, and the cause of any failures. Retrospectives are crucial for improving one’s rationality: they are the opportunity to the grade both one’s direct decisions as well as the decision-procedure and epistemic algorithms that one was employing. Sharing such accounts publicly is prosocial and allows others to learn from one’s experience too.

One can ask “could I have done better had I reasoned better with the information available?” Often the answer is “yes”, and one can apply lessons learnt going forward. It can feel painful to reflect on one’s mistakes, but doing so is how one grows.

This tag is specifically reporting actions and outcomes together with an evaluation of the choices/​thinking patterns used. If a post focuses on changes in general beliefs about the world, without reflecting on specific actions, then it is a good fit for the Updated Beliefs tag. A central example of a Postmortems & Retrospectives post is “Arbital Postmortem”; in contrast, central examples of Updated Beliefs posts are “‘Other people are wrong’ vs ‘I am right’” and “Six Economics Misconceptions”.

Related pages: Updated Beliefs (examples of), Growth Stories, Progress Studies

See also: Premortem

Ar­bital postmortem

alexei30 Jan 2018 13:48 UTC
185 points
109 comments19 min readLW link

A LessWrong Crypto Autopsy

Scott Alexander28 Jan 2018 9:01 UTC
195 points
129 comments4 min readLW link

Post­mortem to Petrov Day, 2020

Ben Pace3 Oct 2020 21:30 UTC
84 points
64 comments9 min readLW link

Ra­tion­al­ist Com­mu­nity Hub in Moscow: 3 Years Retrospective

berekuk25 Aug 2018 0:28 UTC
166 points
23 comments16 min readLW link

RAISE post-mortem

toonalfrink24 Nov 2019 16:19 UTC
144 points
12 comments4 min readLW link

SSC Mee­tups Every­where Retrospective

Scott Alexander28 Nov 2019 19:10 UTC
32 points
0 comments7 min readLW link
(slatestarcodex.com)

A Per­sonal (In­terim) COVID-19 Postmortem

Davidmanheim25 Jun 2020 18:10 UTC
158 points
39 comments9 min readLW link

Align­ment Newslet­ter One Year Retrospective

rohinmshah10 Apr 2019 6:58 UTC
90 points
31 comments21 min readLW link

Per­son­al­ized Medicine For Real

sarahconstantin4 Mar 2019 22:40 UTC
201 points
16 comments5 min readLW link
(srconstantin.wordpress.com)

Preface

Eliezer Yudkowsky11 Mar 2015 19:00 UTC
439 points
12 comments4 min readLW link

Reflec­tions on Berkeley REACH

stardust8 Jun 2018 0:02 UTC
123 points
9 comments14 min readLW link

Reflec­tions on ra­tio­nal­ity a year out

[deleted]31 Mar 2011 1:35 UTC
122 points
108 comments4 min readLW link

Re­view of CZEA “In­tense EA Week­end” re­treat

Jan_Kulveit5 Apr 2018 23:04 UTC
26 points
1 comment8 min readLW link
(effective-altruism.com)

Less Wrong Study Hall—Year 1 Retrospective

Error18 Mar 2014 1:54 UTC
69 points
30 comments12 min readLW link

[Team Up­date] Why we spent Q3 op­ti­miz­ing for karma

Ruby7 Nov 2019 23:39 UTC
68 points
27 comments10 min readLW link

Ham­mer­time Postmortem

alkjash22 Mar 2018 18:10 UTC
36 points
13 comments4 min readLW link
(radimentary.wordpress.com)

CFAR 2017 Retrospective

Valentine19 Dec 2017 19:38 UTC
26 points
5 comments5 min readLW link

His­tory of the Devel­op­ment of Log­i­cal Induction

Scott Garrabrant29 Aug 2018 3:15 UTC
87 points
4 comments5 min readLW link

The Math Learn­ing Experiment

Qiaochu_Yuan21 Mar 2018 21:59 UTC
51 points
32 comments4 min readLW link

CO2 Strip­per Post­mortem Thoughts

Diffractor30 Nov 2019 21:20 UTC
112 points
37 comments8 min readLW link1 nomination

Ar­ti­fact: What Went Wrong?

Zvi8 Oct 2019 12:10 UTC
32 points
2 comments20 min readLW link
(thezvi.wordpress.com)

My case for start­ing blogging

Neel Nanda22 Oct 2020 17:43 UTC
29 points
2 comments16 min readLW link
(www.neelnanda.io)

Post­mortem on my Com­ment Challenge

adamShimi4 Dec 2020 14:15 UTC
45 points
12 comments2 min readLW link

This is my 100ᵗʰ post on Less Wrong

lsusr14 Feb 2021 3:11 UTC
82 points
9 comments1 min readLW link

Texas Freeze Ret­ro­spec­tive: meetup notes

jchan3 Mar 2021 14:48 UTC
55 points
6 comments11 min readLW link

Seven Years of Spaced Rep­e­ti­tion Soft­ware in the Classroom

tanagrabeast4 Mar 2021 2:42 UTC
212 points
36 comments34 min readLW link

Take­aways from the In­tel­li­gence Ris­ing RPG

5 Mar 2021 10:27 UTC
47 points
8 comments12 min readLW link

Up­dates from Boston

evolution-is-just-a-theorem5 Dec 2017 17:22 UTC
87 points
26 comments3 min readLW link

Mur­phy’s Quest Postmorterm

alkjash11 Mar 2018 20:10 UTC
25 points
10 comments6 min readLW link
(radimentary.wordpress.com)

Ret­ro­spec­tive on a quan­ti­ta­tive pro­duc­tivity log­ging attempt

femtogrammar22 Mar 2019 2:31 UTC
25 points
5 comments3 min readLW link

Pre­dic­tion Con­test 2018: Scores and Retrospective

jbeshir27 Jan 2019 17:20 UTC
28 points
5 comments1 min readLW link

Aus­tralian Mega-Meetup 2014 Retrospective

Ruby22 May 2014 1:59 UTC
37 points
25 comments2 min readLW link

1st Athena Ra­tion­al­ity Work­shop—Retrospective

Linda Linsefors17 Jul 2019 16:51 UTC
24 points
8 comments3 min readLW link

Reflec­tions on Premium Poker Tools: Part 1 - My journey

adamzerner9 Oct 2019 0:42 UTC
42 points
12 comments38 min readLW link

Bos­ton Sols­tice 2018 Retrospective

jefftk23 Dec 2018 20:04 UTC
44 points
4 comments4 min readLW link

‘Triv­ial In­con­ve­nience Day’ Retrospective

namespace28 Mar 2018 5:14 UTC
30 points
3 comments6 min readLW link

Unoffi­cial ESPR Post-mortem

lifelonglearner25 Oct 2017 2:05 UTC
27 points
9 comments15 min readLW link

The Jan­uary 2013 CFAR work­shop: one-year retrospective

Qiaochu_Yuan18 Feb 2014 18:41 UTC
53 points
18 comments5 min readLW link

Stan­ford Pri­son Retrospective

Prismattic14 Jul 2011 1:23 UTC
8 points
7 comments1 min readLW link

In­stru­men­tal Ra­tion­al­ity: Postmortem

lifelonglearner21 Oct 2017 6:23 UTC
17 points
8 comments7 min readLW link

One-Year An­niver­sary Ret­ro­spec­tive—Los Angeles

T3t1 Apr 2018 6:34 UTC
12 points
4 comments3 min readLW link

Euro­pean Com­mu­nity Week­end 2014 retrospective

blob29 Apr 2014 14:08 UTC
36 points
24 comments2 min readLW link

The Craft & The Com­mu­nity—A Post-Mortem & Resurrection

bendini2 Nov 2017 3:45 UTC
71 points
107 comments68 min readLW link

Re­sults of a One-Year Lon­gi­tu­di­nal Study of CFAR Alumni

Unnamed12 Dec 2015 4:39 UTC
54 points
35 comments31 min readLW link

Brief up­date on the con­se­quences of my “Two ar­gu­ments for not think­ing about ethics” (2014) article

Kaj_Sotala5 Apr 2017 11:25 UTC
23 points
4 comments2 min readLW link

18-month fol­low-up on my self-con­cept work

Kaj_Sotala18 Dec 2018 17:40 UTC
55 points
4 comments8 min readLW link
(kajsotala.fi)

A Year of Spaced Rep­e­ti­tion Soft­ware in the Classroom

tanagrabeast4 Jul 2015 22:30 UTC
170 points
26 comments13 min readLW link

A Se­cond Year of Spaced Rep­e­ti­tion Soft­ware in the Classroom

tanagrabeast1 May 2016 22:14 UTC
65 points
30 comments21 min readLW link

Ineffec­tive en­trepreneur­ship: post-mortem of Hippo, the hap­piness app that never quite was

Elizabeth27 May 2018 23:03 UTC
11 points
1 comment1 min readLW link
(effective-altruism.com)

I’m leav­ing AI al­ign­ment – you bet­ter stay

rmoehn12 Mar 2020 5:58 UTC
139 points
19 comments5 min readLW link

Sun­set at Noon

Raemon29 Nov 2017 14:52 UTC
136 points
23 comments17 min readLW link

Reflec­tions on Premium Poker Tools: Part 4 - Smaller things that I’ve learned

adamzerner11 Oct 2019 1:26 UTC
19 points
8 comments5 min readLW link

Reflec­tions on Premium Poker Tools: Part 3 - What I’ve learned

adamzerner11 Oct 2019 0:49 UTC
27 points
32 comments15 min readLW link

Reflec­tions on Premium Poker Tools: Part 2 - De­cid­ing to call it quits

adamzerner9 Oct 2019 4:17 UTC
38 points
6 comments8 min readLW link

More write­ups!

jefftk7 Feb 2020 3:10 UTC
40 points
5 comments1 min readLW link
(www.jefftk.com)

Bay Sols­tice 2019 Retrospective

mingyuan16 Jan 2020 17:15 UTC
70 points
36 comments15 min readLW link

Numer­acy ne­glect—A per­sonal postmortem

vlad.proex27 Sep 2020 15:12 UTC
77 points
28 comments9 min readLW link

Group de­bug­ging guidelines & thoughts

Kaj_Sotala19 Oct 2020 11:02 UTC
59 points
3 comments11 min readLW link

How to get value learn­ing and refer­ence wrong

Charlie Steiner26 Feb 2019 20:22 UTC
37 points
2 comments6 min readLW link

Ret­ro­spec­tive: Novem­ber 10-day vir­tual med­i­ta­tion retreat

Kaj_Sotala23 Nov 2020 15:00 UTC
49 points
7 comments8 min readLW link
(kajsotala.fi)

Cog­ni­tive mis­takes I’ve made about COVID-19

DanielFilan27 Dec 2020 0:50 UTC
45 points
3 comments2 min readLW link
(danielfilan.com)

One Year of Pomodoros

Alex_Altair31 Dec 2020 4:42 UTC
54 points
6 comments9 min readLW link

Ret­ro­spec­tive on Teach­ing Ra­tion­al­ity Workshops

Neel Nanda3 Jan 2021 17:15 UTC
55 points
2 comments31 min readLW link

Col­lAc­tion his­tory and les­sons learned

Ron17 Jan 2021 15:01 UTC
34 points
3 comments8 min readLW link

Judg­ing Our April 2020 Covid-19 Predictions

Zvi23 Feb 2021 17:20 UTC
53 points
12 comments10 min readLW link
(thezvi.wordpress.com)

Take­aways from one year of lockdown

mingyuan1 Mar 2021 3:53 UTC
169 points
80 comments6 min readLW link

A Ret­ro­spec­tive Look at the Guild of Ser­vants: Alpha Phase

moridinamael22 Mar 2021 20:34 UTC
67 points
8 comments11 min readLW link

Some­times, it can take a while to no­tice confusion

masasin10 Apr 2021 3:24 UTC
27 points
11 comments5 min readLW link

Uber Self-Driv­ing Crash

jefftk7 Nov 2019 15:00 UTC
110 points
1 comment2 min readLW link
(www.jefftk.com)

Turn­ing 30

Vaniver8 May 2018 5:37 UTC
35 points
5 comments7 min readLW link

What i learned giv­ing a lec­ture on NVC

Yoav Ravid20 Feb 2019 9:08 UTC
11 points
2 comments2 min readLW link

A Ra­tion­al­ist’s Tale

lukeprog28 Sep 2011 1:17 UTC
116 points
308 comments6 min readLW link

Polyhacking

Alicorn28 Aug 2011 8:35 UTC
113 points
603 comments8 min readLW link

Us­ing ra­tio­nal­ity to de­bug Ma­chine Learning

Dr_Manhattan10 Apr 2018 20:03 UTC
20 points
3 comments1 min readLW link
(amid.fish)

Does Age Bring Wis­dom?

Scott Alexander8 Nov 2017 7:20 UTC
35 points
8 comments4 min readLW link
(slatestarcodex.com)

One Million Dollars

jefftk19 Dec 2019 2:10 UTC
61 points
1 comment1 min readLW link
(www.jefftk.com)

Vot­ing Phase of 2018 LW Re­view

Ben Pace8 Jan 2020 3:35 UTC
51 points
29 comments4 min readLW link

“What Progress?” Gw­ern’s 10 year retrospective

Ben Pace2 Mar 2020 6:55 UTC
53 points
2 comments1 min readLW link
(www.gwern.net)

A List Of Ques­tions & Ex­er­cises For Re­view­ing Your Year

Krishaan Khubchand29 Dec 2017 12:59 UTC
18 points
3 comments3 min readLW link

Re­view­ing the Review

Raemon26 Feb 2020 2:51 UTC
45 points
16 comments9 min readLW link

2012: Year in Review

Kaj_Sotala3 Jan 2013 11:56 UTC
62 points
35 comments6 min readLW link

LessWrong down­time 2012-03-26, and site speed

matt3 Apr 2012 4:15 UTC
62 points
7 comments1 min readLW link

State of the Sols­tice 2014

Raemon23 Dec 2014 6:18 UTC
53 points
48 comments6 min readLW link

Mov­ing on from Cog­nito Mentoring

VipulNaik16 May 2014 22:42 UTC
80 points
17 comments7 min readLW link

Suc­cess and Fail Rates of Monthly Policies

lionhearted9 Dec 2017 15:24 UTC
23 points
6 comments5 min readLW link

Begin­ning Ma­chine Learning

crybx30 Apr 2018 15:54 UTC
12 points
4 comments6 min readLW link

Reflec­tions on a Per­sonal Public Re­la­tions Failure: A Les­son in Communication

multifoliaterose1 Oct 2010 0:29 UTC
50 points
39 comments12 min readLW link

My IRB Nightmare

Scott Alexander28 Sep 2017 16:47 UTC
31 points
1 comment19 min readLW link

My mother is now in cryostasis

turchin8 Jan 2011 20:27 UTC
46 points
15 comments2 min readLW link

Ri­tual Re­port: Schel­ling Day

ModusPonies17 Apr 2013 3:46 UTC
46 points
116 comments1 min readLW link

Reflec­tions on a no con­tent Jan­uary 2020 experiment

Elo22 Mar 2020 15:32 UTC
32 points
1 comment2 min readLW link

Blog Post Day Retrospective

Daniel Kokotajlo1 Mar 2020 11:32 UTC
24 points
8 comments1 min readLW link

HOWTO: Screw Up The LessWrong Sur­vey and Bring Great Shame To Your Family

namespace8 Oct 2017 3:43 UTC
38 points
18 comments6 min readLW link

Re­vis­it­ing SI’s 2011 strate­gic plan: How are we do­ing?

lukeprog16 Jul 2012 9:10 UTC
46 points
20 comments7 min readLW link

Why I am not cur­rently work­ing on the AAMLS agenda

jessicata1 Jun 2017 17:57 UTC
27 points
0 comments5 min readLW link

Bay Sols­tice 2017: Thoughts

PDV18 Dec 2017 10:04 UTC
12 points
102 comments3 min readLW link

Leav­ing LessWrong for a more ra­tio­nal life

Mark_Friedenbach21 May 2015 19:24 UTC
46 points
274 comments6 min readLW link

Great Books of Failure

Eliezer Yudkowsky19 Apr 2009 0:59 UTC
30 points
52 comments1 min readLW link

Oxford Pri­ori­ti­sa­tion Pro­ject Review

[deleted]13 Oct 2017 23:07 UTC
10 points
6 comments23 min readLW link

[Question] How was your decade?

namespace28 Dec 2019 17:14 UTC
23 points
8 comments1 min readLW link
(www.youtube.com)

Reflec­tions on AI Timelines Fore­cast­ing Thread

Amandango1 Sep 2020 1:42 UTC
53 points
7 comments5 min readLW link

Blog Post Day II Retrospective

Daniel Kokotajlo31 Mar 2020 15:03 UTC
16 points
9 comments1 min readLW link

SlateS­tarCodex Mee­tups Every­where: Analysis

mingyuan13 May 2017 0:29 UTC
19 points
1 comment5 min readLW link

Amanda Knox: post mortem

gwern20 Oct 2011 16:10 UTC
38 points
484 comments2 min readLW link

mindlevelup 3 Year Review

lifelonglearner9 Jan 2019 6:36 UTC
18 points
0 comments10 min readLW link

One Year of Pomodoros

alexvermeer1 Jan 2014 21:27 UTC
33 points
20 comments2 min readLW link

2017: A year in Science

Elo30 Dec 2017 6:09 UTC
8 points
3 comments3 min readLW link

Anony­mous feed­back forms revisited

gwern1 Dec 2013 2:50 UTC
36 points
15 comments1 min readLW link

The LessWrong 2019 Review

habryka2 Dec 2020 11:21 UTC
112 points
48 comments9 min readLW link

LW Melbourne: Re­port on Public Ra­tion­al­ity Lecture

17 Aug 2013 14:17 UTC
21 points
2 comments4 min readLW link

Tem­plates and videos for do­ing an­nual and daily re­views

peterslattery22 Dec 2019 0:48 UTC
16 points
7 comments1 min readLW link

Reflec­tions on the cry­on­ics sequence

mingyuan3 Feb 2021 1:17 UTC
93 points
10 comments2 min readLW link

Why Quan­tum?

Eliezer Yudkowsky4 Jun 2008 5:34 UTC
29 points
52 comments6 min readLW link

Monastery and Throne

Jacob Falkovich6 Apr 2021 19:00 UTC
116 points
34 comments10 min readLW link
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