© 2008, 2009 *KnowledgeToTheMax*

**Inferences**

*An “inference” is an extrapolation
from a state in one state-space to a state in another state-space,
where both state-spaces describe the same set of real objects. The state-space
from which an extrapolation is made is called the “observed” state-space*. The state-space to which an
extrapolation is made is called the “unobserved” state-space. With reference to
an inference from a state in the state-space {*cloudy*, *not cloudy*} to a
state in the state-space {*rain in the
next 24 hours*, *no rain in the next 24
hours*}, {*cloudy*, *not cloudy*} is the observed state-space
while {*rain in the next 24 hours*, *no rain in the next 24 hours*} is the
unobserved state-space.