Raised several times during the roundtable, the principle (published in 1968) seems to be alive and well in 21st-century organisations.
Calow included a chapter on evolution and development (in itself unusual at the time1) in his 1983 book Evolutionary Principles, published by Blackie in their Tertiary Level Biology Series.
Among the final principles published today: games should explain any in-app purchases or advertising upfront, as well as making it clear what personal data may be shared with other companies for marketing purposes; and that in-app purchases should not be accepted without the "express, informed consent" of the payment account holder.
These are the forces that Sigmund Freud studied in Beyond the Pleasure Principle (Penguin), published in 1920.
A proof-of-principle study, published in Nature, showed that human embryonic stem cells boosted heart regeneration when transplanted into injured macaque hearts.
The manuscript has important new data that could in principle be published in eLife.
The first Muslim scholar to formally champion secularism was the Egyptian judge, Shaykh Ali Abd al-Raziq (1888-1966), in his seminal work al-Islam wa 'Usul al-Hukm (Islam and the Principles of Governance), published in 1925.
Of course, Russian scientist Dmitri Mendeleev is generally credited with creating the modern table of elements as part of The Principles of Chemistry, published in 1869.
Together with the concept of an economic "elasticity" coefficient, Alfred Marshall is credited with defining PED ("elasticity of demand") in his book Principles of Economics, published in 1890.
His "Essay on the Principle of Population", published in 1798, argued that whereas population rises geometrically, food production increases only arithmetically.
