One of those things that Hubbard seems to have been unaware of was that he, too, was aging, getting physically old. Aging deteriorate a person's physical agility and temporal resolution. Early on, Hubbard defined the instant read as an E-meter reaction occurring within 1/20 of a second after a command or an item has been voiced. The average human temporal resolution is roughly 1/20 of a second and some e-sport players are said to have a resolution as good as 1/60 of a second. Hubbard used to be probably fast, much faster than his preclears. As he grew older, he, too, got slower and to him then, 1/20 of a second later was no longer distinguishable from the exact end of a voiced command or item. So he had to redefine the instant read. As he grew even older, he came to be slower than most preclears. It appeared to him that some preclears reacted on the meter prior to the end of something voiced.
(I am still running some solo processes but I no longer audit others. My eyeballs, nerves and brain are much slower than before, despite my case gains if any.)
(I am still running some solo processes but I no longer audit others. My eyeballs, nerves and brain are much slower than before, despite my case gains if any.)