Mind your shoes, the basement is quite wet.

Unlike Shakespeare, though, the dialogue is stripped to the bare minimum by the apes' rudimentary language, which is rather refreshing since everyone gets to the point.

… relayed similar cases but suspected that the rocks were accidently dislodged as the animals fled. ... Hall (1963) considered the same data and concluded that while such behavior might originate accidently during flight or display, ...

A propositional variable is typically a letter (possibly with a subscripted number) whose truth value is contingent upon some interpretation or valuation.