Well, not exactly, I'm just not sure _what_ he wants to do. Which is why I've been emphasizing to the OP at least, that he needs to have a specific plan and rationale, and demonstrate that what he's doing actually will bring something new to the field. I agree if all he's proposing is to characterize bacteria in their mouths then it's not very novel. I was trying to encourage him to come up with a more descriptive proposal that _would_ have some benefit.
The aside arguments about the responsibility of scientists to be, well, responsible are just asides.
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*raises hand*
I don't think that way!