Tech is a big part of the US stock market (significantly bigger than it was before the financial crisis began). The question is: would the unicorn bubble bursting then contribute to a loss in faith in tech in general by investors, a NASDAQ collapse and a haircut for the likes of Apple and FB? We could well be on our way to QE to infinity and beyond. House prices in parts of the UK are 17 times salary now (against a historic average of 4 or 5), which all comes down to central bank policies over the last 20 years. The new (ab)normal might be here to stay, although I'd take a punt on alternative currencies in the meantime.