How perception effects the way we experience the world?

perception or the knowledge u already have, will fill in the gap of the info u receive.
Eg, when u saw someone run on the street to a bus, u will think that he is going to chase and want to get on to that bus. U did not reli saw he run ON the bus, but u do think he was Chasing for the bus. And this therefore will affect ur thought and yr memory~