Jessica Kerr
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Speak So They Can Hear You
“My manager needs to put an ROI on everything,” an SRE leader told me at KubeCon this week. Yeah, I feel that. We know the value of SRE, smoothing all other work so that production can produce. Putting that into dollars though? It’s hard to count the cut costs of incidents that didn’t happen. Yet ..…
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What is special about MCP?
three things MCP can do, and an infinite number of things it can’t do (all of which make it great) AI agents can interact with the world using tools. Those tools can be generic or specific. Generic Run a bash command Operate a web browser Execute a SQL query Specific See my Google Calendar events ..…
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Ritual & its Consequences: book summary
I like how they make the title sound like ritual is a problem. Our culture believes that, I liked to believe it, and so the book is more appealing. (book on amazon, pdf excerpt) The book is not about rituals, but rather the attitude that ritual engenders. It’s an attitude of “If we do things ... Read…
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When efficiency isn’t wasteful
Efficiency means doing the same thing with fewer resources. In software, efficient code is faster, because that uses less compute. If some other software is waiting on yours to return, then your speed is saving upstream compute. Efficient data uses less space, which means less network bandwidth to move…
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Fixing Without Understanding
A while back, I washed a book in a load of laundry. It got all the way through the dryer before I realized what all this white stuff was. Ooops! I’ve been feeling bad for all the fuzz left in the dryer. Poor dryer. Maybe I can take its front off and scoop all that ... Read moreFixing Without Understanding
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Augmented Coding: Better with Principles
Today I opened the AWS console in order to transcribe a video, and I could not be bothered to do all that clicking. This has to be six lines in the terminal. I don’t know the six lines, but Claude does. Claude “automated the entire Amazon Transcribe workflow” in 300 lines of dependency checking, argument…
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Augmented Coding: an Experience Report
Last weekend I sat down with augmentcode.com to do some serious AI-assisted coding. The agent, “Auggie,” promises to automate coding tasks to a level I haven’t tried before. Gotta say, it was pretty good. I got farther than I would have alone. But hoooo, it is a new kind of effort and frustration. Overall…
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Software development is…
There is something puzzling about software development. It doesn’t work like many tasks, it doesn’t break down the same way. It feels strangely personal, like there’s a connection between the code and the coder, or else it goes brittle. Today I learned a word for this! Ursula Franklin was a physicist…
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The world is terrible and great
Not only can things be otherwise, they already are, and it is a matter of tuning, tending, activating, connecting, and defending these processes of change that are already in the making. Nick Montgomery and carla bergman, Joyful Militancy Today is Martin Luther King Jr. Day, 2025. The system is broken…
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Cascading OKRs: We can do Better
OKRs (Objectives & Key Results) are a framework for validating alignment through the organization. As a company, as a department, as a team: what are we focused on this quarter? What are we trying to make true? Alignment looks nice when the team OKRs roll up to the department OKRs, and those add up to…
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