On process categorization
How many processes are not reversible after we commit them around us? Are there any reversible processes after all? Isn't act of reverse just an illusion?
Perhaps we can rather divide processes on those that are not reversible after we start them but do not change much or anything if we continue in them - only point of change is its beginning, and on those processes that as we continue gain or loose its effect - thus change something throughout the entire duration.