Working Notes on Agent Systems/Brad Zhang

@teach_fireworks / X longform

The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly reasonable product models and play methods.

The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly reasonable product models and play methods. I just opened X and saw a pro...

May 27, 2026 · 1 min read

The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly reasonable product models and play methods.
Figure 1 / source image

The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly reasonable product models and play methods.

I just opened X and saw a promotional advertisement for this product.

If it were a month ago, I would definitely be tempted.

However, now the Codex mobile app is enough for me, and I can seamlessly switch between ChatGPT and Code at any time.

The added value of other similar products is not enough to convince me to switch to the official app.

So, where is the way?

Figure 2 / source image

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FORMATTOPICCAPABILITYMARKETcoverssignalsFORMATlongform noteTOPICagentic devtoolsCAPABILITYproduct surface
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  format-long_post["longform note"]
  topic-agentic-devtools["agentic devtools"]
  capability-product-surface["product surface"]
  format-long_post -->|covers| topic-agentic-devtools
  format-long_post -->|signals| capability-product-surface

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Built from summary and key paragraph positions

The evolution of the major prototype manufacturers is gradually crushing some of the...THESISThe evolution of themajor prototypemanufacturers isgradually crushingSIGNALThe evolution of themajor prototypemanufacturers isgradually crushingOPERATORHowever, now the Codexmobile app is enoughfor me, and I canseamlessly switchIMPLICATIONSo, where is the way?
Mermaid outline
flowchart LR
  thesis["The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly rea..."]
  signal["The evolution of the major prototype manufacturers is gradually crushing some of the previous seemingly rea..."]
  operator["However, now the Codex mobile app is enough for me, and I can seamlessly switch between ChatGPT and Code at..."]
  implication["So, where is the way?"]
  thesis -->|frames| signal
  signal -->|develops| operator
  operator -->|lands in| implication

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