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I presume you are referring to the fact that we haven’t launched a public API for Observable? The choice to not make the current internal API public is wholly intentional; it’s not public (as in: you are not intended to use it). We intend to change the current API in the future in ways that would break current usage, and making it public now would falsely indicate a williness to support public usage, when our development efforts are focused on the platform itself.