Dr Jo
Mostly wrong. A physician, and computer programmer by night.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 170 | Founded | 2 years ago | Last Issue | 10 days ago |
| Active | |||||
Read this Newsletter
drjo.substack.comLatest Issues
Putting the CAR T before the horse?
Image courtesy of Google Gemini (Don’t call me anti-AI!)
I’m a bit puzzled by our current New Zealand government. From the perspective of a medical professional, their behaviour sometimes seems so short-sighted. Here’s a recent announcemen...
Will AI kill Copyleft?
Original image is from Wikipedia, image on right generated by Google Gemini in response to “a painting of Einstein with his tongue out, as painted by Rembrandt”. Note the hair.
This case is about, as Microsoft’s Director of Applied Science...
Zyzyxia Public Licence
SPDX-FileCopyrightText: 2026 JM van Schalkwyk SPDX-License-Identifier: LicenseRef-Zyzyxia-1
PREAMBLE
The Zyzyxia Public Licence (ZPL) is a copyleft licence for the Zyzyxia programming language and for programs and documentation wri...
Exhibit A
Anonymised jigsaw chart (see text)
I don’t often write directly about my work. But here we are. Over the weekend, I did two things. I again read about the legendary AXD301 switch—not part of my day job. I also did something that is very mu...
Are you Literate?
Donald Knuth, 1974 ACM Turing Award winner
“… it’s just the discipline ...”—Donald Knuth
Have you come across 88-year-old Donald Knuth, author of The Art of Computer Programming? “The father of the analysis of algorithms”. Someone who was...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Dr Jo.
| Subscribers | Engagement | 80 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
Explore More
Authors
The writers behind this newsletter.
Mostly wrong. A physician, and computer programmer by night.
Frequently Asked Questions
How can I access the email archive for Dr Jo?
You can find recent issues that have been published by Dr Jo on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
How many subscribers does Dr Jo have?
To see how many people subscribe to Dr Jo, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
How can I advertise in Dr Jo?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Dr Jo as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
How much does it cost to sponsor a publication like Dr Jo?
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact Dr Jo using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to Dr Jo?
Scroll up to where it says Related Newsletters to see other publications like Dr Jo. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Dr Jo?
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.