Among the most outstanding discoveries of the last century is one that is not quite as momentous as the theory of relativity or cybernetics. It may even still be enigmatic. It has no one single author, it is not expressed in a single formula, conception, or invention. Nonetheless it is worth all the others combined.

This chapter contains sections titled: Is a language necessarily shared with a community of speakers? Innate knowledge of a language Robinson Crusoe sails again Solitary cavemen and monologuists Private languages and ‘private languages’ Overview.

Background. Informed consent (IC) is not only a regulatory but also an ethical requirement to participate in any clinical trial. It is essential to determine that research participants understand what they consent to. Studies that evaluate participants’ understanding of IC conclude that recall and understanding of IC is often low, and researchers recommend that interactive multimedia interventions should be implemented to optimise understanding. Objectives. To assess participants’ understanding of IC of the research trial that they agreed to participate in.Methods. A (...) descriptive survey design, within a quantitative research approach, was used to conduct the study at two government hospitals in the Eastern Cape Province. A semi-structured, self-administered questionnaire was used to collect information from 170 participants in research studies. Descriptive statistics were used to analyse the results.Results. Participants were recruited from among women who enrolled in any of the three studies that were ongoing at the two sites during the recruitment period. The study participants had a mean age of 25.9 years. Nearly one-third (30%) could not recall the purpose of the original trial that they consented to. The concept of randomisation was not understood by any of the participants.Conclusion. Regardless of extensive efforts to ensure that participants understood their participation, this study unveiled poor recall of essential information on IC. It is proposed that IC should be short and only address essential components such as purpose, procedure, possible risks or benefits, alternative options if not participating and explaining the concept of voluntary participation. (shrink)

This chapter contains sections titled: The Tractatus and rules of logical syntax From logical syntax to philosophical grammar Rules and rule‐formulations Philosophy and grammar The scope of grammar Some morals.

This chapter contains sections titled: Setting the stage Leitmotifs External guidelines Necessary propositions and norms of representation Concerning the truth and falsehood of necessary propositions What necessary truths are about Illusions of correspondence: ideal objects, kinds of reality and ultra‐physics The psychology and epistemology of the a priori Propositions of logic and laws of thought Alternative forms of representation The arbitrariness of grammar A kinship to the non‐arbitrary Proof in mathematics Conventionalism.