"For every conception, there are 999 heterosexual acts without procreation," Spiegelhalter explained during an appearance at the Cheltenham Science Festival. "So the poor old Victorians -- there is a lot more non-procreative sex going on now."
Spiegelhalter is writing a book on British attitudes to sex, entitled Sex By Numbers, which attempts to explain the modern penchant for having as much sex as possible.
