Juri Lotman was a prominent Russian-Estonian literary scholar, semiotician, and historian of Russian culture, who worked at the University of Tartu. He was elected a member of the British Academy (1977), Norwegian Academy of Science and Letters (1987), Royal Swedish Academy of Sciences (1989) and Estonian Academy of Sciences (1990). He was a founder of the Tartu–Moscow Semiotic School. The number of his printed works exceeds 800 titles. His archive which includes his correspondence with a number of Russian and Western intellectuals, is immense.
Bust of Juri Lotman by Lev Razumovsky, 1980
Semiotics is the systematic study of sign processes and the communication of meaning. In semiotics, a sign is defined as anything that communicates intentional and unintentional meaning or feelings to the sign's interpreter.
Color-coding hot- and cold-water faucets (taps) is common in many cultures but, as this example shows, the coding may be rendered meaningless because of context. The two faucets (taps) probably were sold as a coded set, but the code is unusable (and ignored), as there is a single water supply.
Signaling and communication between the Astatotilapia burtoni
Chart semiotics of social networking