d. all the above are correct
This question, as well as many others in the Dive Theory Exam, is a reminder to the new divers that their equipment is fallible. It does not cover anything other than NDL for the newer diver. We see it here sometimes where someone will discuss an unexplained DCS hit. I liked @Rollin 's quote:
This question, as well as many others in the Dive Theory Exam, is a reminder to the new divers that their equipment is fallible. It does not cover anything other than NDL for the newer diver. We see it here sometimes where someone will discuss an unexplained DCS hit. I liked @Rollin 's quote:
Measure with a micrometer, mark with chalk, cut with an axe.
That's the theory of decompression. Computer is the micrometer, diver is the chalk and the algoritm is the axe.
It is not about the micrometer being not precise enough.