As a sort-of counterpoint I work at a non-amazon FANG where I am much more involved in model training and evaluation. I still have never needed to define a mode

As a sort-of counterpoint I work at a non-amazon FANG where I am much more involved in model training and evaluation. I still have never needed to define a model myself, but it's much more complicated and far more ownership than someone throwing me a binary. I think that speaks much more to what's going on in Amazon *grins*.