Dinesh is watching us in silence... he is around, always
Repeatability is really an issue. If you want to have let say 15 identical prints, the ideal would be to do it the same day on a same batch.
Because everything, chemical, water, paper, your state of mind, are the same.
That applies also (even more) with toning.
If one of the variables change, you get a different print.
It can be your taste.
It can be the chemicals. And often, even with an exact same setup, it's impossible to get back the same results. That can be very frustrating.
I do Lith and repeatability is sometime, very often, an issue. And now with my chromo series I enjoy the non... repeatability !
But all of this is what makes the beauty of darkroom. You don't press a button like in digisboub.
A note about Bob Carnie who is almost an Alien from planet darkroom.
You have 2 Bob.
The first one is the artist who prints for himself and does whatever he likes.
The second one is the professional who prints for others.
There he needs repeatability.
He also needs to adapt to the different desires and taste from his clients. And that is amazing.
So in fact there are more than 2 Bob !