8/ The real setup. One lean CLAUDE.md. Let auto memory handle lessons. Add path rules when it grows, skills for workflows. Most people manage 7 files to do what one file and the tool already handle. Source: Anthropic Claude Code documentation, 2026.
@aihighlight
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Use Skills for Repeated Workflows, Subagents for Specialized Jobs
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7/ For repeated workflows, use a skill, not a doc. Deploy steps, review checklists, anything procedural goes in a skill that loads only when needed. For a separate specialized job, use a subagent that runs in its own context and reports back.
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Path-scoped rules keep Claude’s context clean for big codebases
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6/ For a big codebase, do not pile everything into one file. Use path-scoped rules in a .claude/rules/ folder. They load only when Claude touches the matching part of your code, so the context stays clean instead of carrying everything at once.
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Claude Code auto memory makes lessons.md obsolete
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5/ The lessons.md file is now pointless. Claude Code has auto memory, on by default. It writes down what it learns about your project on its own after you correct it, and reloads it next session. The tool already does it for you.
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Start with one file: CLAUDE.md for project rules
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3/ Start with one file. CLAUDE.md in your project root. Build commands, your folder layout, conventions, the "always do this" rules. Claude reads it at the start of every session. This one file does what those seven were trying to do.
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Anthropic lists seven real ways to steer Claude Code
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2/ Anthropic lists the real ways to steer Claude Code. There are seven, and they are not files you invent. CLAUDE.md. Rules. Skills. Subagents. Hooks. Output styles. System prompt.
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Claude Code auto-loads specific files, not viral advice files
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1/ The viral advice says make persona.md, lessons.md, references.md, glossary.md, and more. Claude Code does not read most of them. It auto-loads a specific set of files. The rest just sit there unless you import them by hand.
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Beginners: one file, Claude builds the rest
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Code beginners with Claude: everyone says to create 7 files first. You only need one, and Claude builds the rest itself. Here's how:
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AI assists doctors in solving 18 families’ long-held medical questions
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8/ The takeaway is not that AI replaces doctors. It read more than any human could, found leads, and handed them to experts who did the real medicine. For 18 families this week, a question they carried for years finally has an answer.
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AI finds genetic leads; doctors confirm in lab
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5/ It did not diagnose anyone. This matters. The model surfaced leads, candidate explanations tied to specific genes. Doctors then tested those leads in a lab and confirmed them the normal way. The AI found the thread. Humans pulled it.