Surprise/Camp,Grover,Belnap/CGB/Grover: statements (or propositions) can not be surprising - only acts: e.g. insights or thoughts. >Actions, >Propositions.
The note [Author1]Vs[Author2] or [Author]Vs[term] is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition. Grover, D. L.
See external reference in the individual contributions.