Imho
A clean & sober person can not communicate with a useing person on the subject of sobriety. we have no idea of their thoughts, and they have no idea of our thoughts. Marsians vs Venusians.
we can understand (the garbage needs to be taken out,) or (that was a good movie,). We travel the same path in life, on differant vehicles,
A BIKER and a BICYKLIST Both on two wheels, at differant speeds.
A user is deffinatly running on a differant fuel. the only way a alkie slows down is to crash.