{ "cells": [ { "cell_type": "markdown", "metadata": { "navigation": true }, "source": [ "\n", "< [Chapter 2. Small Worlds and Large Worlds](02-small-worlds-and-large-worlds.html) | [Chapter 4. Geocentric Models](04-geocentric-models.html) >" ] }, { "cell_type": "markdown", "metadata": {}, "source": [] }, { "cell_type": "markdown", "metadata": {}, "source": [ "