seed: curriculum content

1.solar-system/2.first-light/01.first-light/index.md

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+---
+type: story
+title: "First Light"
+xp: 25
+duration: 25
+difficulty: 1
+---
+
+# First Light
+
+> **[INCOMING — Mission Control, Earth]**
+>
+> Cadet, you've got the ground beneath you. Bash, Git, the cohort —
+> all there. Now we hand you a language.
+>
+> Python. We picked it because it's small enough to learn fast, big
+> enough to power half the systems running in production right now,
+> and clear enough that you can read it like prose. The trade for
+> "easy to read" is that some advanced concepts come later than they
+> would in C or Java. We'll get to them.
+>
+> [TRANSMISSION CONTINUES]
+
+## Why Python
+
+Three reasons:
+
+1. **Syntax that gets out of your way.** No semicolons. No braces.
+   Indentation is structure. You'll spend more time thinking about
+   the problem than fighting the language.
+2. **Batteries included.** A standard library that lets you do
+   networking, data, files, math, dates, and more without installing
+   anything.
+3. **It runs everywhere.** Web servers, data pipelines, scripts,
+   embedded systems, machine learning. The skills transfer.
+
+## How You'll Run It
+
+You'll meet Python in three ways:
+
+- **`python3 -c 'expression'`** — run a one-liner from the shell
+- **The REPL** — type `python3` with no argument; you get an
+  interactive prompt where every line runs immediately
+- **A script** — write code in a `.py` file and run it with
+  `python3 file.py`
+
+The next three blocks walk you through all three.
+
+## What's Coming
+
+After this module:
+
+- `strings` — text processing
+- `flow` — conditionals and loops
+- `collections` — lists, dicts, sets
+- `functions` — your own building blocks
+- `files-errors` — read/write files, handle failures
+- `algorithms` — recursion, classic problems
+- `oop` — classes
+- `capstone` — the hard ones (8 queens, sudoku, more)
+
+Then the checkpoint.
+
+> **[CLOSING — Mission Control]**
+>
+> You already know how to learn here. The hard part — the courage to
+> open a terminal — is behind you. The rest is practice and patience.
+>
+> Open Python on the next block.
+>
+> [END TRANSMISSION]