What is making me smile today is the conversation about typing speeds in one of the threads. Back 'in the day' when my twins were infants we lived in University housing. I had a home typing business so that I could subsidize the household and be home with the babies. Luckily the babies took nice long naps and as twins, entertained each others on a blanket on the floor near my typewriter for hours. If one was fussy I could put him in a rocking infant seat and rock him with my foot while continuing to type. I could allow myself about 5 hours a day to work around the kids' waking and sleeping cycles and generally earned more than $100 per day typing student papers and dissertations. My typing speed was in the 120-130 wpm range and interesting things occur in the brain to make that transition.
At around 70-80 wpm the brain stops spelling small words such as 'and' and 'the' and the fingers take over the word. At around 100-110 wpm the larger normal words stop being spelled out by the brain. At around 120 wpm you are just reading slowly through the material being typed and the fingers just automatically do it. The exceptions at that stage are highly unusual or long words which you must slow to let the brain spell out for the fingers. When you are flying through, the brain does allow you to edit as you are reading such that the text is adjusted for grammatical errors such as a plural subject with a singular verb. It truly is an amusing scenario to think the word and have it appear on the paper. The downside is that as you transition between stages there will be inversion errors such as 'and' being 'nad' etc.
The advent of computers in my life ruined my typing speed. A Selectric or IBM Executive typewriter can smack the paper with the letters without jamming at higher rates of speed than the computer can stretch the buffer to remember all the keystrokes. My current laptop can allow about 90 wpm without having the buffer freeze, but this is the first computer I have had that can deal with higher than about 60-70 wpm. I suspect that the world record holder with 150 wpm used a manual typewriter because they can go faster than an electric one and that the record holder made virtually no errors to have accuracy deductions to her score.