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• Progress does not consist in replacing a theory that is wrong with one that is right.
  It consists of replacing a theory that is wrong with one that is more subtly wrong....
• Progress does not consist of replacing a theory that is wrong with one that is right.
  It consists of repacing a theory that is wrong with one that is more subtly wrong....
• Progress means replacing a theory that is wrong with one more subtly wrong.
• A column about errors will contain errors. -- Bill Gold
• Any errors in spelling, tact or fact are transmission errors.
• AEE: Absolve Engineering Erro
• IRE: Insert Random Erro
• There are no errors in this book, except this one.
• This sentance has threee errors.