I reckon in some situations it
may be ok to have discreet arrows, cairns, etc guiding the way, such as:
If no survey is available, especially for a common throughtrip/roundtrip...
To protect out-of-the-way formations from lost throughfare...
If the "wrong way" could be dangerous (loose rocks, bad air, unanticipated ducks/sumps, etc)...
If the "wrong way" is long and arduous (compared to the rest of the cave) and could jepadise the team's callout time ...
I know they've helped me in the past and i've been thankful of them. And yes i understand that getting lost on a trip can add to the excitement/experience, but it also can be annoying and timewasting. But maybe i'm wrong