The speedlight will pre-flash that area and lock that exposure into memory.I might caution you that you have 16 seconds to then recompose and take the shot.
But there's a different example that we have to worry about as well, which argues against this proposal that the body could decompose and then be recomposed.
The song was recomposed with disco-like, pop beats, while the phrase “a dirty sky” was replaced with “a sunny sky” and the negative in the line “Stars are not visible in a civilized sky” was cut.