Seemingly unrelated but they are
Does this via
Does
Demonstrates
Connects to
As an example

The Martian

Perserverance

Mark Never gives up, always works to his goal of returning home

Gets Help

Gathers a new radio,
Despite a 20 day journey.

Communication with Earth

Modifies existing technology to better suit him

Rover becomes livable

Water Reclaimer to water plants

NASA never gives up on Mark

They could easily give up and say Mark died to save budget

Other Themes

Hope

Isolation

Humanity

Personal Devlopment

Phycological Thriller

Important Ideas

Stranded on Mars

Humanity works together to
bring Mark home

Space Travel

Mars Colony

Accelerating Space Craft

Technology

Oxygenator

Mars Accent / Decent Vehicle

Return Home

Hard Work

Surviving on Mars for a year and a bit, alone.

Target Audience

Suspense Lovers

Young Adult

Fiction

Science Fiction

Realisistic Fiction

Collaboration

USA collaborates with hundreds of organizations
to find ways to help Mark

USA Collaborates with China

China gives up its own rocket booster
to help NASA, despite it's enormous
cost and determent to the Chinese Space Program

The Crew of Ares 3 Works

Ideal Society

Value for Human Life

They never give up on Mark

Functionality

The switch in agenda to saving Mark is instant

Senate grants emergency funding

Risk Taking

Crew risks their life to save Mark

NASA creates rocket in shortest time frame possible
to send supplies up to Mark

Despite failing, they took a risk that would benifit
Mark immensely

Mark travels to the incomplete Ares 4 Base
(a 60+ day journey)

He could have stayed at his current base and wait for a better
chance of survival

Symbolism

Growing Potatoes

Pereserverance

Setting (Mars)

Seperation

Loneliness

Finding Rover

Finding Voice, Companion

Rover

Loyalty, stays with him

Return Home

Journeys end

Pathfinder

The Path home