This really blew me away, what a spiral through beckoning madness. Glad there was a clear winner among possible solutions, but coming away I feel that OOP has s

This really blew me away, what a spiral through beckoning madness. Glad there was a clear winner among possible solutions, but coming away I feel that OOP has serious problems. FWIW this kind of thing is handled so nicely in Julia, via the type system and multiple dispatch.