Can anyone explain why Mamba models start with a continuous time SSM (and discretize) vs discrete time? I know the step isn’t fixed, also not sure why that’s i

Can anyone explain why Mamba models start with a continuous time SSM (and discretize) vs discrete time? I know the step isn’t fixed, also not sure why that’s important. Is that the only reason? There also seems to be a parameterization advantage too with the continuous formulation.