Should possibly try to trap this ComputeExpectation behavior

[mrshirts]

If you use ComputeExpectations with a list of arrays (i.e. array([[ a, b , c]]) with state dependent = False, it misinterprets it as a 2D array, and passes it to kn_to_n, and overwrites the data.

Could possibly catch this error by checking if the shape of the list of arrays is internally consistent with N_k.

Not really a bug, but it's a case where bad data leads to a silent wrong answer, rather than stopping, which would be easier to catch.