According to a researcher David Harrich scientists have discovered how to modify a protein in HIV so that, instead of replicating, it protects against the infection. The modified protein cannot cure HIV but it has protected human cells from AIDS in the laboratory.
All Scrabble players know that Q and Z are the highest scoring tiles. You can get 10 points for each, in the English language version of the game. But according to one American researcher, Z really only deserves six points.
Not all letters change under these proposals but those that do tend to have fallen in value. In explaining why his overall point distribution is lower, Lewis blames Q which, as he puts it, is an "outlier", much harder to play than other letters.