Trading hours aren't an anachronism. As someone who trades cryptocurrencies, I frequently need to stay up well into the next morning if markets are moving. It never stops, sleeping is never completely safe. Trading hours make it human
Efficiency is profit and is rewarded by the market. Therefore, humanistic single timezone centric trading hours are disincentivized, and because they are not required, they will eventually disappear. Therefore, I view them as an anachronism.
