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John Harrold

@abumirchi.com

I like math, I make drugs.

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Latest posts by John Harrold @abumirchi.com

Oh I did. Next skeet :). This is a journey!

11.03.2026 03:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

That seems to be a take home message that can be applied beyond sleep apnea :). I did intend to do this when she mentioned it, but you know how life is.

11.03.2026 02:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
O2 saturation with dashed line horizontal guides at greater than 95% (normal) and less than 90% (low). You can see the data dip below normal until January when I started using the CPAP and it goes up above 96%.

O2 saturation with dashed line horizontal guides at greater than 95% (normal) and less than 90% (low). You can see the data dip below normal until January when I started using the CPAP and it goes up above 96%.

This shows that the CPAP machine is working what other data do I have? Here you can see the effects on O2 saturation. All figures done in #rstats and #shiny. Dataset and Shiny app were built with Claude Code.

11.03.2026 02:03 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Events/hr data wit Apple Watch measurements on the y-axis and CPAP measurements on the x-axis. The line of identity is there for a reference. A linear fit shows the correlation is consistently about 2 events/hr higher.

Events/hr data wit Apple Watch measurements on the y-axis and CPAP measurements on the x-axis. The line of identity is there for a reference. A linear fit shows the correlation is consistently about 2 events/hr higher.

The data overlap pretty well. We can plot the common data together to see how they relate to each other. What you can see here is that the apple watch data consistently over predicts by about 2 events per hour but the slope is about 1.

11.03.2026 02:03 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Breathing disturbances over time (December 2025 to present) showing the decrease in breathing disturbances starting on January 25th. Yellow data from Apple Watch and the blue data are from the CPAP machine.

Breathing disturbances over time (December 2025 to present) showing the decrease in breathing disturbances starting on January 25th. Yellow data from Apple Watch and the blue data are from the CPAP machine.

I put it off but managed to go to a sleep doctor at the end of last year and took an at home sleep test. I was diagnosed with sleep apnea and I got a CPAP. I've been using it for about 5 weeks now and it works pretty well. I exported the data from that and merged it with my Apple Health data.

11.03.2026 02:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Breathing disturbances over time (Jan 2025-Jan 2026) showing values greater than normal (less than 5/hr) and often elevated (greater than 15/hr)

Breathing disturbances over time (Jan 2025-Jan 2026) showing values greater than normal (less than 5/hr) and often elevated (greater than 15/hr)

Is there anyone out there getting #sleepapnea messages from their Apple Watch and wondering if it means anything? I've always snored, and my wife thought I was stopping breathing while sleeping. I was also getting those messages from Apple Health (I wear the watch while I sleep).

11.03.2026 02:03 πŸ‘ 5 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

Honestly it might have been faster to just pull up all the edits and see if they changed the meaning of anything.

10.03.2026 22:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Another obvious factor is that any deal made with Trump is worthless. I mean he started a trade war with Canada in his first term. He got the USMCA and then after he took office he just started things back up. He does this with everything. Whats the point of making a deal with someone like this?

10.03.2026 14:18 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I was very skeptical about AI but once I started using Claude Code I'm sold. It actually works. About a week after I started posting positive things on AI I was added to a block list.

10.03.2026 03:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

This is really cool.

10.03.2026 02:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm not sure what I wrote in my post that made this person think I was talking in any way about the military using AI to target folks.

09.03.2026 18:01 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Imagine a programmer and an artist working together with something like this. They could make software that is both functional, easy to use, appealing, etc.

09.03.2026 15:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think thats true. Another thing I don't think folks appreciate is this will open things up to design folks who would have never approached these things. Many years ago when I was linux based all the applications where very.. non-user friendly.

09.03.2026 15:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

How do these people still have insurance? Wont they just cancel your plan after a certain point?

09.03.2026 14:22 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
I want to create a pdf reading and creation tool that has a subset of features
that I need from Adobe Acrobat. I want this to run as a native Mac
application. Here are the features I want are the ability to:

- Read in transparent png file and stamp them on to the pdf
  with the ability to resize and move the stamps. I want to be able to resize
  and move them even after I close and reopen the file.
- Fill in form variables
- Combine multiple files of different file type (pdf, image
  files, etc) into a single pdf file with bookmarks for the file. 
- Add comments to the file.
- Run OCR on text in document, and if the document is scanned pages overlay
  that text on the pdf to make it selectable. 
- The ability to edit the file including: add text boxes with controls for
  font, color, size, etc; edit the text to highlight, underline, and strike
  through.

I want to create a pdf reading and creation tool that has a subset of features that I need from Adobe Acrobat. I want this to run as a native Mac application. Here are the features I want are the ability to: - Read in transparent png file and stamp them on to the pdf with the ability to resize and move the stamps. I want to be able to resize and move them even after I close and reopen the file. - Fill in form variables - Combine multiple files of different file type (pdf, image files, etc) into a single pdf file with bookmarks for the file. - Add comments to the file. - Run OCR on text in document, and if the document is scanned pages overlay that text on the pdf to make it selectable. - The ability to edit the file including: add text boxes with controls for font, color, size, etc; edit the text to highlight, underline, and strike through.

By the way, this was the prompt I used:

09.03.2026 14:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thats true. I've thought a bit about this. If someone like me makes it and puts my version on the internet then that can be used as a starting point. If it's free and they can download it and just say: Add feature X to this.

09.03.2026 14:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

companies. And many are using Claude Code exclusively. It's basically replaced entry- and mid-level programmers.

09.03.2026 14:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think with the tools that are available now, there will be many people who had job security in tech in the past that may not have that security in the near future. I use Claude Code for side projects, but I'm not a programmer at work. But I do have friends who are programmers at some large SAAS

09.03.2026 14:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

If there is a bug or behavior you don't like, you just describe it. It may take a couple times, but it'll fix/change what you need. It's my understanding Anthropic is making more consumer facing things like this as well. I was skeptical like you before I used it. I'm not any more.

09.03.2026 14:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I use Claude Code and while the terminal aspect may seem intimidating it really is as simple as: Here is the program I want. It grinds away for like 20 minutes asking you questions, and then it drops something that just works. It's not perfect.

09.03.2026 14:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I've also built many services that have enabled me to pull a lot of my activity behind my firewall to better control my data. These are all in languages I don't know and I haven't had to do any programming.

09.03.2026 13:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think with Claude Code we're pretty damn close. I've been documenting my experiences with it here. I built a PDF reader/editor as a native macos app that was good enough for me to cancel my Acrobat subscription.

09.03.2026 13:42 πŸ‘ 3 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

While I'm with you, it's my understanding that it's highly unlikely that if Trump decides to use nuclear weapons anyone will stop him.

09.03.2026 03:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I don’t think this is right. I go to get imaging or bloodwork, those data are stored at a data center somewhere. I go back to the doctor and he pulls up those and all my other health records from the data center in order to make a diagnosis and determine treatment.

07.03.2026 19:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

For the presidential race that is effectively the same thing. But you and I live in California so it’s not really relevant.

07.03.2026 19:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Even the folks who own refineries have to pay more for oil now right?

07.03.2026 19:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I’m really looking forward to all the libertarians expressing their fondness and appreciation for Mamdani reforming all of these oppressive regulations.

07.03.2026 18:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Quite possibly delusional. But you made the right choice. I might extend an open invitation if they happen to be in town.

07.03.2026 18:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Video thumbnail

I started making this R package 6 years ago. I finally have it in a state I'm happy with, thanks to Claude Code #Rstats github.com/MattCowgill/...

18.02.2026 11:48 πŸ‘ 206 πŸ” 41 πŸ’¬ 8 πŸ“Œ 8

Claude code is amazing. Folks need to start thinking of it as a tool to disengage from the SAAS ecosystem. They can use it to start taking back control of their data.

07.03.2026 17:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0