Stephen Totilo writes:
"I'm on vacation this week, but before I left I wrote five brief essays considering the five stages of "Spore." Late Friday I interviewed "Spore' creator Will Wright and asked him to share his thoughts on why each stage is essential. You can find his thoughts, shared during a half-hour phone call, at the end of this essay. This fourth installment of the series covers the Civilization Stage. The remaining Stage will be covered tomorrow."