Thank you for taking the time to explain in such detail, you are very good with words and descriptions. Everything makes sense, but I would like to explore one part a little deeper.
In the example of the lever lifting weight: it's clear that the longer the lever the more force can be exerted beyond the pivot but I can't help but imagine a strong man on the other side of the pivot helping you lift. He may not have as much influence pound for pound, but his help does indeed make the 100lb weight feel like 50. When the bottom hand does nothing, the strong man gets a hernia. But when they cooperate, each fills it role perfectly.
There are nuances in each method that influence fishability, loop shape, a whole realm of surrounding factors for each. They all work and it boils down once again to a matter of style and/or adaptability to one's fishery.
These discussions are valuable in the sense that they help casters think through things that might lead them to adopt (or discard) a style.
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