Einstein's Revolution: Library Edition

"Relativity" is a concept rooted in the tension between appearance and reality, and it reaches far back in history. Heraclitus argued that only change is real; Parmenides argued that change is impossible, and his follower Zeno invented paradoxes illustrating many of the problems in concepts like space, time, and infinity. Protagoras even argued that there is no single, correct view of reality, but that reality for any person is precisely as in seems to that person. In his words, "Man is the measure of all things". 

Degrammaticalization

Grammaticalization is a well-attested process of linguistic change in which a lexical item becomes a function word, which may be further reduced to a clitic or affix. Proponents of the universality of grammaticalization have usually argued that it is unidirectional and have thus found it a useful tool in linguistic reconstruction. In this book