Aren't the fact the sidesticks are not linked a matter of principle, not complexity/weight?
My understanding is
negative on this one. To have them the way they are is not a result of applying any specific operational philosophy. I.e. it was not a design objective to create a solution with separate sticks.
Building them connected and movable, with sufficient reliability while observing fail-safe/operational criteria, was such an engineering and economical puzzle that decision was to go independent-redundant. So I was told. The present configuration has a number of its own unique benefits as well.
Good skills of a proficient operator are built around the fact they are not interconnected. Tools to mitigate the undesirable consequences are provided in hardware, software and liveware. Using those
instinctively, as a reflex action, that is where the chosen solution cannot compare to connected yokes.
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