How does knowing the equivalence point for a titration pick out an indicator?

Answer is: near equivalence point indicator should change color, so we must pick indicator who changes color near pH of equivalence point.
Equivalence point is the point which there is stoichiometrically equivalent amounts of acid and base. 
Chemist can draw pH curve (graph showing the change in pH of a solution, which is being titrated) for titration and determine equivalence point.

Replicate prove reliability and validity