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Many financial economists believe in the efficient-markets hypothesis: that stockmarket investors accurately absorb new information and reprice shares to reflect companies’ underlying profitability. But Buttonwood takes a critical view, showing why markets can be much more volatile (often on the upside) than efficient-market reasoning can explain.
Hasan Piker has said some offensive things, like praising bank robbery and saying he would “vote for Hamas over Israel any time”. That’s not reason enough to ban him from Britain, but the home secretary has said giving him a visa “may not be conducive to the public good”. This incredibly vague standard is a grave threat to free speech. | 
