The argument made is a corollary of "openness to experience" indicators for creativity - just, with immigration, once you make the big leap more of the new expe

The argument made is a corollary of "openness to experience" indicators for creativity - just, with immigration, once you make the big leap more of the new experiences automatically come to you during ordinary life. If you're already seeing exciting new things happening around you(and they aren't the same exciting new things everyone else sees), you may be getting as much of the effect as needed.