Urgent.News

What's breaking now, across thousands of outlets.

More in Tech

The undo has to exist before the write does

An agent that changes something runs in the order decide, act, report. Verification, where there is any, reads what already happened. That's a fine shape for a log.

  • Undo must precede write operation in revisionist logging approach
  • Each change given unique canonical identity with verified inverse
  • System requires inverse-capable tools, currently only 13.8% available

rulereceipt

I'm building RuleReceipt, a tool that helps manage rules/configs across AI coding assistants (Claude, Copilot, Cursor, etc.) so you don't have to duplicate setup per tool. It's in early stages.

How Traceroute Actually Works

The Internet is not One Wire When you open a website, it feels instant and it feels like one step. In reality, that request hops through a chain of routers — your home router, your ISP's equipment…

  • Traceroute identifies network latency by mapping data packet paths.
  • It uses TTL field to drop packets at each hop, revealing IP addresses.
  • ICMP error messages provide hop information, but may be blocked by routers.

More from Sunday 30 August →