It's more about being unable to pinpoint .1 differences in the rating to give levels these days. Choosing between 8.2 and 8.3, for example, is a fairly arbitrary decision, and may be determined by one or two very small factors. However, most JCSers still seem to take tiny differences in the rating very seriously, thinking a level that obtained an 8.3 is necessairly better than a level that obtained an 8.2.