Imagine you had perfect foresight about COVID-19 at the start of the year. You correctly foresaw that the global pandemic would kill over 700,000 among 20 million infections by August. In Australia, borders would close, cities would be locked down, most mortgagors would be on income support and companies would be allowed to trade while insolvent. You then had to guess how much the stock market would fall. Would you say about 10%?