New Scientist is reporting about a new speech recognition tool that promises to let programmers write clean code without ever having to lay a finger on their keyboard. 'The tool, called VoiceCode, has been developed to help programmers with repetitive strain injury (RSI). This is a common affliction for people who spend a lot of time using a keyboard or mouse and causes pain in muscles, tendons and nerves in a sufferer's arms and back. Some estimates suggest 22% of all US computer programmers, or 100,000 people, suffer from the condition.'
The short answer is "no", but it is a qualified "no" because there are odd ways of interpreting the question which could justify the answer "yes". Light is composed of photons so we could ask if the photon has mass. The answer is then definitely "no": The photon is a massless particle. According to theory it has energy and momentum but no mass and this is confirmed by experiment to within strict limits. Even before it was known that light is composed of photons it was known that light carries momentum and will exert a pressure on a surface. This is not evidence that it has mass since momentum can exist without mass. [ For details see the Physics FAQ article What is the mass of the photon? ]. Sometimes people like to say that the photon does have mass because a photon has energy E = hf where h is Planck's constant and f is the frequency of the photon. Energy, they say, is equivalent to mass according to Einstein's famous formula E = m
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