Being able to type a repeated phrase fast is something; it's better than not being able to. You want the typist to memorize some test sentences so that they ar

Being able to type a repeated phrase fast is something; it's better than not being able to. You want the typist to memorize some test sentences so that they are fast enough to demo what the machine can handle. However, if the phrase was contrived to be sympathetic to the workings of the machine, that would have been a misleading demo.