Immigration boosts innovation and wages in the US. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. Increased immigration to the US since 1965 is estimated to have increased innovation and wages by 5%.
Roud then ventures a theory of his own: the custom, he argues, probably developed from a children’s game called Tig-touch-wood that was popular in early 19th century England.
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But I can accept that. I'll be very good at dreaming by then.