To me it suggested threes: The past, present and future. Yes, no and maybe. Black, white and gray. Father, son and holy ghost, etc. I also thought of it as a cartoon representation of time moving, but not moving, or an illusion of either. It was meant to look like a symbol, or a logo, but be sort of a joke on that power style. A mock icon.
Anyway, the zism image was used more or less as a logo for the SLANT, especially in its early days. I still like how the old ones like these look, but I don't draw them anymore. Can't get them to look right ... turn, turn, turn.