re: BEA Advanced 3Q17 GDP Estimate Out...3.0%

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I think a fair argument can be made that the first quarter of this year is not a fair reflection of the positive economic policies from the executive branch. There's probably a 3 to 6 month lag time from policy implementation to measuring it on the GDP scale.

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i think it's risible to expect any discernible change in GDP growth from "positive economic policies from the executive branch" made in a few months, at any time horizon

but if you want to attribute some permanent change in growth to such a thing, you'd need multiple years and some pretty convincing controls minimum