(...) let's divide the experience (rollercoaster ride) into three parts. The first is continuous, methodical and persistent ascent (...). This phase represents the period from the 16th century to the middle of the 19th century, when the elites of Europe promote the technological development that would ensure their domination of the world. The second plunges us into a dizzying fall, with the loss of references to space, our surroundings and even the control of conscious faculties (...). This took place around 1870, with the so-called Scientific-Technological Revolution. (...) The third is the loop, the climax of precipitous acceleration, which would represent the current period, marked by a new dramatic outbreak of transformations, the Microelectronics Revolution (...) which makes the two previous movements seem Slow motion projections. (...) The technological apparatus becomes increasingly unpredictable, irresistible and incomprehensible
Nicolau Sevcenko, The race for the 21st century, 2001, p. 14-17.
What does this metaphor mean? Why was it made? I believe the roller coaster metaphor prompts us to reflect on the modern and contemporary world and, through the Revolution Scientific-Technological and the Microelectronics Revolution, in plays in the midst of inventions, in the spectacle of society.