The Invasion

I love biology when it comes to cells and virus, how easily we can be infected and what could happen if we get infected? *Augh* I'm tired of zombie movies and I have one question about them: If they only are survival instincts from brainstem, how come they don't start eating each other to survive rather than chasing someone who actually can run fast..?

This movie "The Invasion" with Nicole Kidman and Daniel Craig is excellent, how this thoughts comes true in our world. What if a alien spore came and infected to control us like puppets? Excellent actors giving me chills, really convincing.
People talk about freedom, can we sacrifice a part of ourselves for world peace?
Can you live by being partly you with world peace rather than fully you in a world where the newspaper mostly post about war?