1. Map
2. Compass (optionally supplemented with a GPS receiver)
3. Sunglasses and sunscreen
4. Extra food
5. And water
6. Extra clothes
7. Headlamp/flashlight
8. First aid kit
9. Fire starter
10. Knife

The ten essentials is a good list of basic equipment everyone should have. I agree that one shouldn't go into woods without at least this much. However, to say this is all you should take seems to be a mistake to me. Some people prefer to supplement this list with other items.

Such as bug repellent, a repair kit (there's nothing like getting your pants torn in the woods with no sewing kit), and signal devices like a whistle and mirror. Other people may have other items they prefer to label as survival gear, that don't fall onto this list.