There's tradeoffs to choice. In the case of another commenter "too much choice" means a ton of churn and a lot of friction when it comes to building models. I

There's tradeoffs to choice. In the case of another commenter "too much choice" means a ton of churn and a lot of friction when it comes to building models. I think there's always a trade off of innovation vs stability that people should be thinking about here. Granted, things like the model formats should help long term, but for now we're going to be dealing with a ton of churn on APIs. I'm sure another thing like dynamic graphs will come along and we'll need to update the apis. I suspect keras will respond to this at some point by adding primitives for eager mode and the like. I know both data scientists who need more advanced models and others who prefer the keras api just building off the shelf models.