Never has a bull market climbed a steeper wall of worry. In spite of a proliferation of positive economic indicators, the consensus remains gloomy. Bullish economists are than hens’ teeth.

The average forecast for third-quarter US gross domestic product growth is a weak 0.8 per cent, which would be by far the slowest first quarter of any recovery on record. Since 1945, the average annualised real US growth rate in the first two quarters of recovery is 7 per cent. History provides abundant evidence that the deeper the recession, the stronger the bounce. Even the recovery from the Great Depression conformed to this rule, real US GDP grew 10.8 per cent in 1934 and 8.9 per cent in 1935.