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Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
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Luce received a B.S. in Aeronautical Engineering from the Massachusetts Institute of Technology in 1945, and PhD in Mathematics from the same university in 1950. He began his professorial career at Columbia University in 1954, where he was an assistant professor in mathematical statistics and sociology. Following a lecturership at Harvard University from 1957 to 1959, he became a professor at the University of Pennsylvania in 1959, and was awarded the Benjamin Franklin Professorship of Psychology in 1968. After visiting the Institute for Advanced Study beginning in 1969, he joined the UC Irvine faculty in 1972, but returned to Harvard in 1976 as Alfred North Whitehead Professor of Psychology and then later as Victor S. Thomas Professor of Psychology. He was elected to the National Academy of Sciences in 1972 for his work on fundamental measurement, utility theory, global psychophysics, and mathematical behavioral sciences. In 1988 Luce rejoined the UC Irvine faculty as Distinguished Professor of Cognitive Sciences and (from 1988 to 1998) director of UCI's Institute for Mathematical Behavioral Sciences. He received the 2003 National Medal of Science in behavioral and social science for his contributions to the field of mathematical psychology.
Contributions for which Luce is known include formulating Luce's choice axiom formalizing the principle that additional options should not affect the probability of selecting one item over another, defining semiorders, introducing graph-theoretic methods into the social sciences, and coining the term "clique" for a complete subgraph in graph theory.
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