skill-r2h1-my-book-skills-v09-72 · by Install
$ agentstack add skill-r2h1-my-book-skills-v09-72 ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-r2h1-my-book-skills-v09-72) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
72公式（复利速算）
R（核心引文）
> "你们直接用 72 除以你们投资的年收益率的百分比，得出的数字就是这笔钱翻一倍所要的年数。" > "72 除以 12 是多少？6！对！这就是说，如果你们每年得到 12%的红利，6 年以后你们的钱就会翻一倍。" > "72 除以 15 等于 4.8 年。简单地说，如果你们投资的收益率是15%，五年以后，钱就会翻一倍。"
I（底层原理）
复利是"世界第八大奇迹"。72公式是估算复利效果的快捷方式，精确度在利率8-15%区间内相当可靠。复利的力量在于时间：同样一笔钱，时间越长倍数增长越惊人。72公式还适用于估算通货膨胀的影响：72÷通胀率=货币贬值一半的年数。
A1（过去应用）
金钱魔法师们计算出2万马克在12%收益下20年后变成约20万马克（接近10倍）。每月再加1000马克储蓄，20年后超过87万马克。吉娅后来用72公式算通胀：3%通胀率下，24年后钱贬值一半。
A2（未来触发场景）
- 比较不同投资产品的收益率时
- 计算某个投资多久能翻倍时
- 评估通货膨胀对自己存款的影响时
- 给孩子讲解复利的力量时
E（执行步骤）
- 确定年化收益率（如12%），72÷12=6年翻倍
- 计算目标金额所需时间：翻倍次数×单次年数
- 反推所需收益率：72÷期望翻倍年数=所需收益率
- 计算通胀影响：72÷通胀率=贬值一半的年数
- 用这个公式快速评估任何投资方案的长期效果
B（边界与局限）
72公式是估算而非精确计算。高收益率（>20%）时误差变大。公式假设收益再投资（复利），如果每年提取收益则无效。实际投资收益率不确定，历史表现不代表未来。
相关技能
- [基金投资入门](v10-基金投资入门/SKILL.md)
- [鹅与金蛋](v06-鹅与金蛋/SKILL.md)
- [应对市场波动](v17-应对市场波动/SKILL.md)
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: R2h1
- Source: R2h1/my-book-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.