I guess it depends on what the novel is about. For instance, if it’s a thriller and the protagonist has to catch a killer by the end of the novel, then you may not be able to introduce such a large reveal as survivors guilt in the first two pages. To explain that in the first 500 words unless it happening at the moment may force you to tell it rather than show it. You don’t want to start a novel with two pages of telling. How are you planning to the reveal his guilt?