The Many Ways of Representing Sounds in English Spelling

English spelling, owing to the conditions that gov- ernd the growth of the English language, now presents many anomalies. The same letter, or combination of letters, often represents many different sounds; while the same sound is often represented by many different letters, or combinations of letters. The combination ough, for example, represents at least 9 different sounds in the words cough, rough, though, through, plough, hough, thorough, thought, hiccough; and the sound of e in ...

 Science Depends on Revolutions Large and Small

Scientific development depends in part on a process of non-incremental or revolutionary change. Some revolutions are large, like those associated with the names of Copernicus, Newton, or Darwin, but most are much smaller, like the discovery of oxygen or the planet Uranus. The usual prelude to changes of this sort is, I believed, the awareness of anomaly, of an occurrence or set of occurrences that does not fit existing ways of ordering phenomena. The changes that result therefore require 'put...