this is counting it as if O only takes an argument, which is single dispatch, which OOP covers already (the `self` is the single argument).

In practice, Multiple Dispatch shines when you have 1) more than one argument type (duh) 2) higher order `O` operation [1]

[1]: think of a numerical routine that calls eigen or something, and you want eigen to exploit the matrix's type, such as symmetry or upper-triangular, and this is encoded as a matrix type)