This film was difficult for some to grasp. Although I would argue that it couldn't be any easier.
The art was absolutely wonders especially if you appreciate good artwork (not only in an animation sense, but in a Fine Arts sense.) I only wish there were a lot more films like this.
Katsura Otomo creator of Akira, screenwriter for Metropolis, and 10-years in the making Steamboy. Not much of a legacy to be proud of. Only 3 films within a 3 decade span of time?