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Promises & predictions

What the brothers said would happen, 2007–2026, and what the channel later says did happen: 290 promises (commitments in their own first-person words) and 439 forecasts about the world. A viewer meets the promise and its payoff in different videos, often months apart; this ledger puts them side by side. 113 of 290 counted promises (39 %) are reported kept, a median 7 days after they were made (when kept in a later video). Most forecasts are never revisited on the channel: 86 of 439 have a reported outcome. Unresolved items are marked "no report on the channel" — never "broken" or "wrong". The status list of these threads is on Threads.

Counted = said sincerely or playfully, asserted or hedged (the register gate); not counted but listed: 0 promise(s) and 10 forecast(s) in a joke, hypothetical or uncertain register.

Dates are upload dates, which set the order. Where the speaker gives a different recording date in the video, it is added as "said on YYYY-MM-DD, implied" (derived from the date said in the video). Intervals ("N days later") and relative deadlines are counted from that said-on date.

What the channel reports about their promises, by brother

promiser promises kept kept late changed dropped progress reported, no completion no report on the channel due date passed, no report median days to payoff
John 178 65 (37 %) 5 (3 %) 3 (2 %) 2 (1 %) 24 (13 %) 79 (44 %) 24 7
Hank 108 41 (38 %) 2 (2 %) 1 (1 %) 15 (14 %) 49 (45 %) 7 7
both 4 2 (50 %) 2 (50 %) 410
all 290 108 (37 %) 5 (2 %) 5 (2 %) 3 (1 %) 41 (14 %) 128 (44 %) 31 7

Of the 45 kept promises that carry a readable deadline, 37 were reported kept on or before it and 8 after it (or explicitly late).

By year

year promises kept no report forecasts forecasts hedged
2007 29 48 % 41 % 2 100 %
2008 29 41 % 45 % 2 0 %
2009 43 44 % 37 % 5 80 %
2010 10 20 % 60 % 9 44 %
2011 25 44 % 44 % 10 90 %
2012 9 11 % 67 % 4 50 %
2013 6 0 % 67 % 9 56 %
2014 11 45 % 45 % 12 50 %
2015 14 43 % 29 % 9 56 %
2016 13 46 % 46 % 22 64 %
2017 8 50 % 25 % 13 46 %
2018 12 25 % 25 % 10 70 %
2019 11 27 % 45 % 14 43 %
2020 14 64 % 21 % 66 38 %
2021 10 20 % 70 % 96 38 %
2022 6 0 % 67 % 17 59 %
2023 8 38 % 62 % 23 57 %
2024 12 50 % 50 % 32 22 %
2025 10 30 % 40 % 40 32 %
2026 10 40 % 60 % 34 32 %

Promise and payoff, side by side

The 15 kept promises with the longest wait between promise and payoff (of 100 kept in a later video).

How plans drifted

Every promise reported late, changed or dropped (15), with the original promise first.

Due, and no word since

31 promises carry a deadline that falls inside this snapshot, with no later update or outcome on the channel. They may have been delivered off-channel (in a description, on Tumblr, at an event) — this is a list of silences, not failures.

due promise promiser made in
2007-05-10 John: show Hank the lost birthday greetings on Thursday (2007) John Brotherhood 2.0: May 8th: House Hunters 00:00:42
2007-11-23 Hank: share what he's thankful for in Friday's video (2007) Hank November 20th: A White Thanksgiving 00:03:29
2008-06-22 John: do ten of the Nerdfighters' requests in a video filmed that weekend (2008) John Memo to the Fourteenth Century (and to the Tobians) 00:03:46
2008-08-17 John: do another Question Tuesday the following week (August 2008) John Question Tuesday Returns (on a Wednesday) 00:03:36
2008-09-13 John: make a video about the Paper Towns Tour on Saturday (2008) John A Video about Videos 00:03:21
2008-12-20 Hank: no P4A mailing-list emails after December 20 and no sharing of addresses (2008) Hank The 2008 Project for Awesome!!! 00:01:39
2009-04-21 John: email a secret bonus video to people who buy Hank's CD within a week (2009) John Question Tuesday 00:02:33
2009-04-26 John: make two Evil Baby Orphanage news videos this weekend (2009) John Weekend of Surreality 00:02:16
2009-05-09 Hank: feature some Nerdfighter reviews of the Star Trek film over the weekend (2009) Hank Star Trek: The Movie, Review 00:03:08
2009-11-17 John: do a Question Tuesday on Tuesday (November 2009) John Gus Is A Bug 00:02:34
2009-11-19 John: pay $2 of Hank's CD price for buyers via DFTBA.com/John for 48 hours (2009) John Question Tuesday: The Free Money Edition 00:01:34
2010-05-14 John: do another advice video on Friday (May 2010) John Advice on Dumb Boyfriends, Going to College, and More 00:00:13
2010-05-31 John: do his level best to be in the UK in May 2010 (2009) John The Island of Nerdfighteria? 00:01:01
2010-11-11 John: prove he is not wearing pants in French Revolution Part III (2010) John Headless Monarchy: The French Revolution, Part II 00:06:01
2011-10-25 John: do another Question Tuesday next week (October 2011) John Question Wed — THE COVER OF THE FAULT IN OUR STARS! 00:02:30
2012-08-05 Hank: live-tweet the Mars Science Laboratory (Curiosity) landing from the SciShow Twitter on Sunday night (2012) Hank EXTRA! Thoughts from Tour 00:03:14
2012-10-31 John: do his punishment next week (2012) John Do Businesses Need to Suck? 00:01:27
2013-07-30 John: return to vlogbrothers from paternity leave on July 30 (2013) John TFiOS Movie, Bees, Babies, and More! 00:03:48
2014-01-29 John: do a live show reading from Esther Earl's book This Star Won't Go Out (2014) John Question Tuesday! TFIOS Movie Trailer, Penguin Knees, and Backflips 00:01:25
2015-03-16 Hank: do a Reddit AMA on Monday about the first of two secret projects (2015) Hank Screaming Into Pillows 00:02:20
2015-07-24 John: share a Mountain Goats song he loves every day until the Paper Towns US release (2015) John Paper Towns Madrid with Nat Wolff! THE TOUR BEGINS video description
2016-02-29 John: look at the big problems from Davos (income inequality, climate change, refugees, gender inequality and poverty) in coming weeks (2016) John Billionaires and Radical Hope: Thoughts from the World Economic Forum in Davos, Switzerland 00:03:22
2016-09-13 John: answer viewers' questions about 100 Days in a live show the same day (2016) John YouTube's New Thing (and a New Thing of Our Own) 00:03:42
2017-06-30 John: make only three public appearances in the next ten months (NerdCon: Stories, NerdCon: Nerdfighteria, a Cleveland speech) to finish his novel draft (2016) John My Body Is a Broken Temple 00:02:34
2018-02-22 John: do a Facebook Live event with Daniel Biss on Thursday at 1pm Eastern (2018) John When Your Friend Runs for Governor 00:03:42
2019-12-31 John: spend fewer than 20 nights away from his kids in 2019 (2019) John How to Make Goals, Not Resolutions 00:02:28
2019-12-31 John: write 11 more episodes of The Anthropocene Reviewed in 2019 (2019) John How to Make Goals, Not Resolutions 00:03:12
2019-12-31 John: write 5,000 words a month of a new novel in 2019 (2019) John How to Make Goals, Not Resolutions 00:03:24
2023-12-31 Hank: report next year whether physical products' 2% share of Complexly revenue changed (2022) Hank How A YouTube Company Actually Makes Money 00:03:14
2025-06-30 John's family: eat beef only on beef days (four honoring days and two flex days a year) for the next year (2024) John BEEF DAYS 00:03:27
2026-09-30 Hank: have Alexis Nikole on Hank's channel to promote her first book when it comes out (2026) Hank Project for Awesome 2026 part 3! 03:09:40

How well did they forecast?

429 counted forecasts: 185 hedged (43 %), 51 conditional ("if…", "unless…"), 56 restated in a later video. Horizons: dated 103, soon 33, open-ended 50, not stated 243. The channel reports an outcome for 84; for 67 more the stated horizon already passed inside this snapshot without a report.

forecaster forecasts hedged conditional dated horizon horizon passed, no report came true wrong
John 166 46 % 27 62 19 40 10
Hank 263 41 % 24 41 16 21 13
all 429 43 % 51 103 35 61 23

Most common hedge words: "probably" (33), "i think" (23), "maybe" (11), "hopefully" (7), "i suspect" (7), "may" (6), "might" (6), "i don't think" (5).

Forecasts whose horizon has passed

Dated forecasts whose horizon falls inside this snapshot, with the outcome if the channel reports one, and the first later statement on the same subject as a lead.