[ +- ] random knowledge skill
1 Arcana (ancient mysteries, magic traditions, arcane symbols, constructs, dragons, magical beasts)
2 Dungeoneering (aberrations, caverns, oozes, spelunking)
3 Engineering (buildings, aqueducts, bridges, fortifications)
4 Geography (lands, terrain, climate, people)
5 History (wars, colonies, migrations, founding of cities)
6 Local (legends, personalities, inhabitants, laws, customs, traditions, humanoids)
7 Nature (animals, fey, monstrous humanoids, plants, seasons and cycles, weather, vermin)
8 Nobility (lineages, heraldry, personalities, royalty)
9 Planes (the Inner Planes, the Outer Planes, the Astral Plane, the Ethereal Plane, outsiders, planar magic)
10 Religion (gods and goddesses, mythic history, ecclesiastic tradition, holy symbols, undead)