What does it mean that most information is noise?

The vast majority of information you encounter is irrelevant to your actual goals. Treating all inputs as equally worthy of attention is itself a decision — and it is almost always the wrong one.

Example: An engineering lead opens her laptop at 8:30 AM. Before she writes a single line of code or makes a single architectural decision, she has processed: 74 Slack messages across 12 channels, 23 emails (19 automated), a morning standup where 6 of 8 updates were irrelevant to her projects, 3 news articles a colleague shared, and a LinkedIn notification thread. By 9:15 AM she has consumed roughly 15,000 words. Fewer than 200 of them — a single Slack thread about a production latency spike — will influence any decision she makes that day. The other 14,800 words did not just waste time. They consumed the cognitive resources she needed to think clearly about the one thing that mattered.

Try this: Run an information audit on a single day. From the moment you open your first screen to the moment you close your last, log every information input you encounter: emails, messages, articles, notifications, meetings, social media posts, news headlines. At the end of the day, go through the list and mark each item with one of three labels: (S) signal — this directly informed a decision or action I took today, (N) noise — this had zero bearing on anything I did or decided, (A) ambiguous — I consumed it but cannot point to a specific decision it influenced. Count the ratios. Most people discover their S:N ratio is below 1:20. Keep this audit. It is the baseline you will use throughout Phase 7.