The same rigid divide informs a recent manifesto "in defense of science and secularism" signed by such academic luminaries as Daniel C. Dennett, Steven Pinker, Peter Singer and Edward O. Wilson.
The figures also illustrate an increasingly rigid divide between the fortunes of these countries and those further north, where the picture is far rosier.
Perhaps this is down to the skill of its film-makers, a rigid divide between (editorial) church and (advertising) state, or an uncanny knack to pick brand partners that perfectly reflect the demographic.
Mr Cochrane thinks there can be a rigid divide between the safe and risky assets; history suggests that there will also be a market for products that cross this divide.
Héctor Carrillo argues that the stereotype of Latin culture, with its demonstrative religiosity and more rigid divide in gender roles, contrasts sharply with that of American culture ("How Latin Culture Got More Gay," Op-Ed, May 17).
He also did nothing to dispel the impression that he looks upon winning the Presidency as an opportunity to expand his family's business interests, and that he has no intention of establishing any kind of rigid divide between himself and the Trump Organization.
In France there was a rigid divide between the prestigious grandes écoles and the rest of the higher education system, with few variations among institutions in these categories.
So while gendered toys may not lead directly to domestic violence they may well play a small part in creating the rigid gender divides that do make women more vulnerable.
The government indicated that it was unlikely to introduce proportional representation for the election to the European Parliament in 1999, a move to which the Lib Dems attach huge importance.But Mr Blair is committed to a more inclusive politics, which transcends rigid party divides.
Equally pernicious, by general consent, was the rigid status divide between academic and vocational learning.
