ORIGINAL: GMMAT
I'm thinking about this more and more.
Question...
"IF" we use a square with levelers (with bubbles)for plumb and level......HOW can the arrow not be parralel to level ground (on ahorizontal plane) AND the string not be "Plumb" to said ground (level ground)?
Does it have something to do with the arrow at full draw NOT being "level"? (v. the bow not being drawn)
I think you're thinking about this slightly backwards. The image posted here of the EYEtoPEEPtoSIGHTtoTARGET line is very deceiving.
The line of sight is quite simply, from your EYE to the TARGET. The peep and pin is aligned on that line to ensure your arrow intersects the line at the target. Thats why we have to sight in our bows for different yardages, because the arrow flys in a parabolic curve.
Consider how you anchor your bow. What you do is fix the relationship between your eye, and the nock/string intersection. (not exactly if you use a kisser button, but to close to notice a difference). You then rotate your bow up or down about that fixated point, that changes the angle of the arrow in relation to the line of sight.
I hope this helps...