The problem is the business isn't paying for a single programmer's value, it is paying for two. The only time I have known pair programming actually worked pre

The problem is the business isn't paying for a single programmer's value, it is paying for two. The only time I have known pair programming actually worked pretty good was when a senior would take a junior under their wing when the junior was first hired. This would facilitate quick ramp-up for the junior to know all practices and the vast amount of things that are not documented (or updated). Keep in mind this only lasted a couple of months max, and not necessarily every day.