The Proposition
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A proposition is a statement that is either true or false — and atomic propositions, the ones with no smaller statements inside, are the vocabulary a rule system reasons with.
Show
"The soil is soggy" is atomic; "the soil is soggy and the leaves yellow" is two atoms joined by and.
Watch for
Pulling compounds apart into atoms is the first working skill of rule systems.