Semantic Coherence: Marco.org – Signal Evidence & AI Readability

Marco.org

(https://marco.org) 📸 Data Snapshot: May 25, 2026
Semantic Coherence — The Lens

Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.

Semantic Coherence Homepage promise vs. Sub-page reality.
20 Impact Weight: 20 / 100
100% Reputation

There is zero semantic drift detected between the homepage and sub-pages. The homepage signals a deep dive into personal tech projects and industry commentary, and the sub-page titles (despite the server errors) align perfectly with this technical focus. The heading hierarchy is logically structured, moving from broad post titles to specific technical sub-components like [H3] True-peak detection.

Semantic Coherence is read from the heading hierarchy first: what each page announces in its H1 and headings, then whether the body actually delivers on it. Below is the structure the engine mapped, followed by the clean text to check for drift between promise and reality.

🏗️ Semantic Structure — heading hierarchy & page identity (the promise the page makes)
HOMEPAGE Marco.org (https://marco.org)
Title

Marco.org

H1 Marco.org
H2 A letter to John Ternus
H2 Retreating to Safety
H2 Ten years of Overcast: A new foundation
H2 The Overcast Redesign: Part One
H2 Ten years after we lost Steve Jobs
H2 The future of the App Store
H2 Developer relations
H2 In-App Purchase Rules
H2 Introducing Voice Boost 2: Remaster your podcasts
H2 Low Power Mode for Mac laptops: making the case again
H2 The 16-inch MacBook Pro
H2 Overcast summer update
H2 Apple is Listening
H2 Clip sharing with Overcast
H2 Overcast 5.1 with Instant Search
H2 The 2018 iPad Pro
H2 The 2018 Mac Mini
H2 Benchmarks
H2 I Can’t Believe The Mac Mini Is This Awesome, I Can’t Even Say “Again” Because It Never Was
H2 Why it’s hard to read the time on Infograph
H2 Overcast 5: Watch, Siri, search, and redesign!
H2 Low Power Mode on the Mac
H3 What’s new
H3 What’s not
H3 What’s gone
H3 What’s next
H3 Why?
H3 Allowing external purchases
H3 No side-loading
H3 No alternative app stores
H3 Course correction
H3 Goals
H3 Live LUFS normalization
H3 A brief tutorial on clipping and distortion
H3 Lookahead limiter
H3 True-peak detection
H3 Mastering-quality processing for everyone
H3 16-inch MacBook Pro (Late 2019, 2.4 GHz 8-core i9)
H3 Per-podcast customization, longer clips
H3 “Suggestions for You” replacing Twitter
H3 15-inch 2015 MacBook Pro (2.2 GHz quad-core i7)
H3 13-inch 2018 MacBook Pro (2.7 GHz quad-core i7)
H3 Archives
HEADER_HEADING_REPEATED_BODY 500 Internal Server Error (https://marco.org/2018/07/31/mac-low-power-mode/)
Title

500 Internal Server Error

H1 500 Internal Server Error
HEADER_HEADING_REPEATED_BODY 500 Internal Server Error (https://marco.org/2021/06/03/developer-relations/)
Title

500 Internal Server Error

H1 500 Internal Server Error
HEADER_HEADING_REPEATED_BODY 500 Internal Server Error (https://marco.org/2020/09/11/app-review-changes/)
Title

500 Internal Server Error

H1 500 Internal Server Error
📝 The Narrative — clean text per page (homepage promise vs. sub-page reality)
HOMEPAGE (https://marco.org) Marco.org
Those awesome Trey Anastasio acoustic shows are pretty quiet. ↩︎
Apple doesn’t make all of their audio APIs available on all platforms: some are Mac-only and never came to iOS, and watchOS has an even smaller subset than iOS. The more I can accomplish in my own code, the less I depend on Apple’s choices for which APIs they make available to developers. ↩︎
It’s just a command-line tool for now. You don’t want it. (But if you do… someday, maybe.) ↩︎
This all happens in milliseconds. ↩︎
At 1X, with Smart Speed enabled.
Smart Speed was actually entirely rewritten as part of Voice Boost 2, but it’s less interesting. It performs the same job as before, but much more efficiently, and taking advantage of the measured loudness when Voice Boost is also enabled. ↩︎
For instance, I also built a de-esser into Voice Boost 2, but it slowly became unnecessary as I improved the other processing, so it’s not currently enabled. ↩︎
Smart Speed is a big deal here, I think — I’m not aware of any other podcast apps with silence-skipping over AirPlay 2.
(Or LUFS normalization, or true-peak lookahead limiters.) ↩︎
1106 chars
SUB-PAGE · THIN (https://marco.org/2018/07/31/mac-low-power-mode/) 500 Internal Server Error
[H1] 500 Internal Server Error

nginx
38 chars
SUB-PAGE · THIN (https://marco.org/2021/06/03/developer-relations/) 500 Internal Server Error
[H1] 500 Internal Server Error

nginx
38 chars
SUB-PAGE · THIN (https://marco.org/2020/09/11/app-review-changes/) 500 Internal Server Error
[H1] 500 Internal Server Error

nginx
38 chars