The flaw in pronouncing a sibilant S, which speech therapists call sigmatism, can follow even minor changes to the way the tongue aligns with the teeth.

One of the attractions of the whole panorama of Jewish mysticism for Scholem is its vivid and manifold demonstration of how it is possible to maintain a historical identity and a certain sense of continuity of belief while vigorously transvaluing values, redefining world and self and the realm of the spirit as historical circumstances change.

The cameras were out and we were all trying to get pictures of each other, which we then spent a further half an hour trying to Instagram to make us look as good as possible

Zivin's (1982) findings bear this out, that as actors grow to adulthood they become increasingly calculated and less spontaneous about displaying nonverbals, and their displays correspondingly tend to be understood as more calculated and less spontaneous.