Why did the spelling of time safari change in sound of thunder?

In Ray Bradbury's "A Sound of Thunder," the spelling of "Time Safari" is altered to "Time Safari" to emphasize its futuristic and commercial nature. The change reflects the advanced technology and the business-like approach to time travel, highlighting the artificiality of the experience. This branding also serves to underscore the ethical and moral implications of manipulating time for profit, setting the stage for the story's themes of cause and effect.