The gather rate of rare resources can be increased in various ways, as described in the main article. Note that Knowledge is not gathered before the Classical Age, but the Greeks may gather Knowledge from the beginning, making an early exploitation of Papyrus more useful.
An early connected Wool resource can be of some advantage to a nation, as cheaper and faster creation of Citizens translates into faster city development and resource gathering, while also saving some precious Food. However, from the mid game on, as cities are more or less well developed and resource gathering is usually well established, this bonus becomes almost insignificant. Also, the Chinese do no benefit as much from this resource, as their Citizens are created instantly anyway.
Timbergathering is increased despite the sheep not being made from Wood at all, and are living, moving mammals, possibly because wool is a better material for making fine cloth compared to tree bark and fibre which tends to be used by primitive societies with no access to wool for weaving.