A
closed🔒 string (more accurately,
closed coil) is a
string state with no
open🔓 circuitry (does not have
endpoints; forms a
loop). All
game-related
strategies (
goals) are devised to obtain a
closed string (thereby
solving and validating it as some
fibor, although the
game itself may still be
open) via
folding. (see also
zero-bubble,
loop)
/// Actually, there is no loop requirement for a string
to be closed (not open
), since the end
of the string
must attach to a (mem)brane
(even if that membrane
is the string
's other endpoint
). Therefore, the yield
is derived when in that a string
is closed, but only by acoustic approximation.