"... evidence that nudging works. Perhaps not up to the standard of science..." That's pretty close to saying it doesn't work. The point of this meta-study was precisely to show that the evidence claimed to support nudging was probably attributable to random variation + unnatural selection, where the unnatural selection was publication choice: either the researchers who got negative (null) results chose not to bother writing it up and submitting it, or papers that reported negative were rejected by publishers.
There are lots of people who do X for a living, but where X doesn't work: palm readers, fortune tellers, horoscope writers, and so on. I'm not even sure that funds managers reliably obtain results much above random.
There are lots of people who do X for a living, but where X doesn't work: palm readers, fortune tellers, horoscope writers, and so on. I'm not even sure that funds managers reliably obtain results much above random.