Can’t Hurt Me — Coin-Size Summary

Theme: Mental toughness is earned by embracing pain, discipline, and relentless effort.
Core Conflict: Goggins vs. his traumatic past, inner weakness, and physical limits.

Key Concepts:

The 40% Rule: When you think you’re done, you’re only at 40%.
Accountability Mirror: Be brutally honest with yourself.
Calloused Mind: Repeated hardship builds inner strength.

Message:

“You are in control of your mind. You just have to own it.”

Tone: Gritty, intense, no-excuses. It’s less about motivation and more about transformation through discomfort.

Core Lesson:

“You will never learn from people if you always tap dance around the truth.”

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Mindset — Coin-Size Summary

Theme: Your beliefs about ability shape your success. Two Mindsets: Fixed Mindset: “I’m either good at this or I’m not.” Growth Mindset: “I can improve with effort and learning.” Key Message: Talent matters, but belief in learning and persistence matters more. Applications: Work: View challenges as growth opportunities. Product: Embrace feedback and iteration. Life: Progress comes from effort, not perfection. Core Lesson: “Becoming is better than being.”

Rethinking Writing Assistants: A Fresh Opportunity in macOS Productivity

In a world full of grammar checkers, writing enhancers, and AI-powered editors, one question remains surprisingly unanswered: why hasn’t anyone built a truly seamless, intelligent writing assistant for macOS that combines next-word prediction with real-time rewriting? The Current Landscape Today’s macOS users have several writing tools to choose from: Compose for macOS: Offers shortcut-activated rewriting, grammar correction, and text shortening in any app. However, it doesn’t predict your next word or sentence. Apple Writing Tools (macOS Sequoia): System-level rewriting, tone adjustment, and proofreading. Great polish, but still reactive rather than proactive. Fixkey: Adds voice-to-text and real-time rewriting with support for multiple languages. GrammarPaw: Lightweight and powerful, with ChatGPT integration, but requires manual activation for each rewrite. Cotypist: Possibly the closest to predictive text—offers GitHub Copilot-style autocomplete across macOS apps, but lacks grammar...

Idempotent Database Operations

In databases, an idempotent operation is one that, when repeated, produces the same result as a single execution. A common idempotent pattern is the UPSERT (update-or-insert) operation. For example, running INSERT … ON CONFLICT UPDATE with the same values multiple times will not create duplicates – it either inserts a new row or updates the existing row, but repeating it makes no further change. In contrast, a naïve INSERT statement without conflict handling will create duplicate rows on each execution, which is non-idempotent. Similarly, UPDATE queries that set a field to a fixed value (e.g. SET status = 'active') are idempotent: once the value is set, running the update again has no new effect. Deleting a row by its primary key is idempotent as well – after the first delete, further deletes simply find nothing to remove. Database constraints and keys also help: for instance, a unique constraint can silently ignore or reject duplicate inserts. Transactions contribute by making...

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