Joost de Valk
Partner, Emilia Capital · 1 appearance on the record.
computed by AI from the episodes · how this works → · full disclaimer →
founderinvestorexecutiveengineer@jdevalk ↗LinkedIn ↗joost.blog ↗Wikipedia ↗Instagram ↗
He is the founder of Yoast and creator of the Yoast SEO plugin for WordPress, which was acquired by Newfold Digital in 2021. Through his investment firm Emilia Capital, he invests in and advises early-stage open-source, web technology, and digital marketing ventures.
2 supported 2 partly supported 0 contradicted 1 not yet assessed 3 not checkable as stated how the 8 claims stand · each chip opens the sources
5 predictions · 3 assertions · 2 opinions · 8 insights · 3 disclosures · 1 what if · every statement was checked. The predictions and assertions are the 8 claims: statements the public record can support or contradict. 4 are resolved, 1 is not yet assessed, and 3 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.
The record, in short
What the tape says about how Joost argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.
Their most notable supported claim
Expressed certainty vs assessment result
weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet
Argument clarity: do they answer the question? how? →
redirected or did not address 2 of 34 assessed questions (6%). Watch them ▸
This is a score against a rubric. It is not a rank. Every host question → answer exchange is scored with names hidden on directness, coherence, precision and compression, 1–5 each, on meaning alone: disfluencies are ignored, and only raw unedited episodes count. This is the score that measures thought. Every scored exchange, scores shown → · The rubric and its checks →
How they sound: speaking style how? →
246 words/min while actually speaking · 21.6 um and uh per 1k words · 26.7 false starts per 1k · 42.4% of pauses land inside a clause
English is their second language (first language: Dutch). These numbers measure fluency in English. They do not measure thought; the argument clarity score above is read from substance alone.
Measured by listening to the audio itself: 7,676 words across 1 episode of raw-level tape, transcribed verbatim with every um and uh kept, each one attributed only where the alignment onto our timed stream is unambiguous. These are measurements of speaking style. We do not rank them: across this corpus, fluency and argument quality are nearly uncorrelated (ρ≈0.2), and smooth talking does not signal clear thinking. How it's measured →
How the interview went all their pushback → series average →
Across 1 rated episode:
Everything Joost de Valk said on 20VC that made the record, most notable first. Filter by type, assessment or year in the ledger →
Appearances (1)
| Episode | Date | Speaking time |
|---|---|---|
| Joost de Valk: How I Founded Yoast; The Ultimate Guide to SEO; The Threat of AI | E1000 · | Apr 12, 2023 | 39m |