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Erratum to: Chapter 2 in: A. R. E. Oliveira, A History of the Work Concept, History of Mechanism and Machine Science, DOI 10.1007/978-94-007-7705-7_2

Chapter 2 contains an unfortunate error in the footnotes.

The following footnote should be added as further information on Descartes's Geometry mentioned on page 49:

  • Descartes’s Geometry is a book of 87 pages divided into three parts: Book I—Problems which we can build with circles and straight lines only; Book II—On the nature of curved lines; Book III—On the construction of problems which are solids or more than solids. It deals with the study of problems of geometry becoming algebraic equations. On page 3 of Book I Descartes describes his method: Thus, to solve any problem, we should use each in order, first considering those already done, and find values for all lines to be constructed, also for those unknown. Then, without considering any difference between the known and unknown lines, we should proceed to solve them in the order that presents itself the most naturally of all such that they depend mutually one on the other, until one can find a means to express an equal quantity of two ways, what we call equation; because the terms of one of these two manners are equal to the other. We should find as many equations as lines that are unknown (Descartes 1991).

In addition, the reference to footnote 9 in the middle of page 50, actually refers to footnote 8 as it appears at the bottom of page 49. Footnote 10 in the main text refers to footnote 9 at the bottom of page 50, etc., to the end of the chapter.

Lastly, footnotes 22 and 21 should be switched around, so they appear in correct numerical order.