Pardon the jargon. But it is a necessary addition to the vocabulary.

To evaluate if a feature is valuable, you could attach the value of the feature to past inferences and retrain a new model to check for improvement in performance.

But this “attach”-ing needs the feature value to be as of the time of the past inference.

That’s not a new concept.

True. But it is not necessary to reinvent the wheel for engineers. :)

That’s the point of this subthread though. What’s the new thing Chronon is doing? It can’t just be point in time features because that’s already a thing.