Date: 2025-07-22 AO: 3rdf-timekeeper Q: bratwurst PAX: Franky, Roulette FNGs: None COUNT: 3 As Roulette said, this Chapter is a “warning” about how to use the mental models. A Map (each Mental Model) is a representation of the underlying territory, so you need to be aware of its limitations, assumptions, and be open to feedback when applying it.
bratwurst brought the visuals – a Globe and a Map (Mercator projection). Some comparisons –
A globe accurately represents the Earth’s surface, maintaining correct proportions and shapes, while a Mercator projection is a flat map that distorts these properties, especially near the poles. The Mercator projection is useful for navigation because it preserves compass directions as straight lines, but it significantly exaggerates the size of landmasses far from the equator. [1, 2, 3]
Here’s a more detailed breakdown:
Globe: True Representation: A globe is a three-dimensional model of the Earth, accurately depicting the relative sizes and shapes of landmasses and oceans according to National Geographic Society. [1, 1, 4, 4, 5, 6] Distortion-Free: It minimizes distortion, allowing for accurate measurements of distances and directions. [1, 1, 5, 5] Ideal for Understanding Earth’s Shape: Globes are excellent for visualizing the Earth’s spherical nature and understanding spatial relationships between different locations. [1, 1, 5, 5] Limited Practicality for Navigation: While accurate, globes are cumbersome for practical navigation at sea. [1, 1, 7, 7]
Mercator Projection: Cylindrical Projection: The Mercator projection maps the globe onto a cylinder, which is then unrolled into a flat map. [8, 9] Directional Accuracy: It preserves compass directions as straight lines (loxodromes), making it useful for navigation. [3, 10] Area Distortion: The projection distorts the size of landmasses, especially at higher latitudes. For example, Greenland appears larger than South America, even though it’s much smaller according to
Atlas.co. [2, 11] Misleading Perception of Size: The Mercator projection can lead to a skewed understanding of the relative sizes of countries and continents. [2, 12] Useful for Navigation: While area is distorted, the Mercator projection is still valuable for nautical navigation because it allows for straight-line courses to be plotted on the map. [3, 7]
NEXT 3 WEEKS ARE BOOKED: 7/29/2025 Hippie: Circle of competence 8/5/2025 Franky: First principles thinking 8/12/2025 Citgo: Thought experiment