Anterograde amnesia is definitely a greater challenge for a storyteller than retrograde amnesia because the amnesic character is essentially static in the story

Anterograde amnesia is definitely a greater challenge for a storyteller than retrograde amnesia because the amnesic character is essentially static in the story, and that's one of the reasons that Memento is such an extraordinary film. For another example, while it's not central to the story, Finding Nemo features a supporting character who has anterograde amnesia (Dory the fish).