Automation on Engineering Notes

Agent Loops Explained: The Simple Pattern Behind Useful AI Agents

Wed, 24 Jun 2026 00:00:00 +0000

Every few months, AI gets a new phrase that suddenly shows up everywhere.

Lately, that phrase is agent loop.

You will see people describe agent loops as the future of software, the thing that unlocks autonomy, or the missing ingredient behind useful AI agents. The idea is much less exotic than that.

An agent loop is a repeating cycle:

flowchart LR
 Think[Think] --> Act[Act]
 Act --> Observe[Observe]
 Observe --> Think

Think. Act. Observe. Repeat.

The Doorman Fallacy and Why AI Keeps Failing at Replacing People

Wed, 24 Jun 2026 00:00:00 +0000

In 2023, AI was going to replace programmers. A year later, customer support was next. By 2025, some executives had moved on to talking about whole departments.

By 2026, the story looks messier. Companies are still automating wherever they can, but a lot of them are learning the same lesson the hard way: replacing a visible task is not the same as replacing the job.

That sounds like a small distinction until the automation goes live.