Explanation : This is clearly the first point of communication
or a message, not a feed back of any
delivered message. Input and output figure in
"Man-machine interaction"; man talking to
computers with programs, applications and
drivers assigning them work to be done (input)
and they, responding with solutions (output).
Explanation : Two propositions are contrary, if they cannot
both be true, but they might both be false.
They have same subjects and predicates; and,
are different in qualities but have the same
Two propositions are contradictory, if one
of them is a denial of another. They cannot
both be true, and cannot both be false. They
have same subjects and predicates but are
different in quantities (all, some, no) as well
A superaltern is a universal proposition that
is the basis for the immediate inference of a
corresponding particular proposition.
A proposition is a subaltern of another if it
must be true in case its superaltern is true,
and its superaltern must be false in case the
subaltern is false.
Explanation : The desire to communicate was the main drive
behind language making, which itself was
incident upon social life and cultural growth.
During the stone ages, the communication
was in a nascent stage. Communication with
the aid of runners, birds, arrows, smokes and
shouting was replaced with signs and non-
verbal communication via cave paintings,
petro glyphs, ideograms and pictograms
which gradually made way for different kinds
of verbal methods of communication.
The technological innovations of the nineteenth
century and later - post and telegraph,
telephone, phonograph, photography,
newsprint, motion pictures, fibre optic, radio,
television, computer, internet, social media,
and so on, have powerfully changed the way
humans communicate with each other.