(mannequin+boiler+water pipes) = x -> x*2 -> 2x=y -> y?
2x = y I -x
x = y -x I -y
x-y = -x I +y
x = -x+y I-x
L = -2x+y I +2x
2x = y I ???
...whatever, I'm a photographer and not a mathematician.
-> y=mannequin symmetry
nothing comes and nothing goes, but i am here and i am now.