An emulsion shock is  a shock that allows the air and oil to mix; it does not utilize an internal rubber bladder. Silicone oil doesnât compress well without the help of some air to displace the space taken up by the piston when itâs moving within the shock body.
The Joy of Mechanical Force. (The Foundation of Futurism [Manifesto of Futurism, 1909], translated from the French by Eugen Weber, reprinted by permission of Dodd, Mead and Company from Paths to the Present by Eugen Weber. Copyright 1960 by Dodd, Mead and Company, Inc.)
Boggs was writing in the 1970s about revolutionary movements in Russia, Italy, Spain, and the US New Left. The concept of prefiguration was further applied by Sheila Rowbotham to the women's movement of the 1960s and 1970s, by Wini Breines to the US SDS; and by John L. Hammond to the Portuguese Revolution.