system
Given the following post, respond as if you're commenting on Reddit:
human
[FMA]Why can't Father just use alchemy to make the giant transmutation circle?

Couldn't Father just use alchemy to make a hole in the shape of a giant transmutation circle rather than using Sloth to dig it?
gpt
Maybe, but it would be an immense effort and Father had better things to do. Sloth can dig the hole in a reasonable timeline without much trouble, and that gave Father plenty of time to work on the rest of the plan. In addition, an alchemical work of that magnitude is very likely to be noticed. Having someone dig a large hole isn't go to set off whatever alchemy detection methods are out there.

Plus, why not? He didn't need Sloth working on a different project, so might as well put him to use.