Which is more important - the characters or the plot? It seems like the characters because in the opening scene the camera really focuses solely on the characters by zooming in on the skier, the dog, the girl, and the awkward meeting between the skier and Peter Lorre.
What do I learn about Peter Lorre and the character Abbott in this brief scene and how might it affect my view of him later in the film? Well he seems to be a likable man. I liked the way he laughed it off when he was knocked down by the skier. But when he looked at the skier there was an eerie moment and it made me feel that something isn't exactly level with Abbot. It's almost like foreshadowing that he will be the antagonist and the other guy is the protagonist.
Comparing the opening scenes of The Pleasure Garden and The Lodger with the opening scene here:
I think in the silent films there was a collection of shots put together in a fast pace. We had to get the major elements of where and when and who at the very beginning without much dialogue and sound. We relied only on the visual. In this opening scene there is action at the beginning but we can put things together through the characters' dialogue and interaction with each other. I think the setting, plot, characters, and a hint of a climax coming up are given to us by what we learn from the opening scene.