# Simulator in semi-honest model in real/model paradigm

Does a simulator in the semi-honest model in IDEAL/REAL model paradigm necessarily make use of the corrupted party's input?

For example, suppose a simulator given an input named $$I$$ and an output named $$O$$, tries to simulate the view of the real world. In this case, should the simulator necessarily use the input $$I$$ for the simulation? Or the simulator can simulate without the use of the input? Does it depend on the scenario? If you need the exact scenario, please refer to the below link:

Exact Scenario