One person to show that it is possible to co-operate with animals, and train them to follow you around for food; and the rest of people to not murder him for his tasty friends.
Once you have some agriculture; you can have more - spread out into other species of animal and plant - then you settle down. Once you have monoculture you need some kind of trading system between farming groups. When someone gets wise about bartering or inventing a representative currency you start to get civilisation... Or when someone "offers" to pick up a sword so others can keep farming...
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.