The owners and captain of the titanic believed the ship was invincible and could not sink. they were willing to keep going in spite of several warnings. this shows the effect of

This shows the effect of too much complacency. They thought that the ice was just movable, little did they know that it was only the tip. However, research also shows that the captain indeed tried to discern whether to turn around, however, with the size of the ship, it was impossible, so they proceeded going anyway.