I failed basic reading comprehension. The first sentence of the abstract clearly says "It has recently been shown that the mere presence of one’s own smartphone on the desk impairs working memory performance."
So while the presence of a smartphone does indeed seem to impair the working memory, they found "no overall effect of smartphone presence on short-term and prospective memory performance".
Maybe a bank run on Tether for some other reason than the SEC? It would require a lot of people to lose trust in Tether at the same time, which surprisingly still doesn't look likely. But it might happen.
I always hoped that Bitcoin would become "the people's currency" but currently it does not work as cash anymore. Lightning might become great, but the engineering needed just to send to offline nodes makes me sceptical, not to mention that the cost of funding channels is always handwaved away.
I wonder, does HN hate the "Bitcoin Cash" fork as much as BTC? It's the closest to the technical specification that made me interested in BTC in the first place.
So while the presence of a smartphone does indeed seem to impair the working memory, they found "no overall effect of smartphone presence on short-term and prospective memory performance".