Thanks,
@Nemrod, for linking this article. It's a good read. According to the article, Main's first cave dive was in 1969, 45 years before the article was written. So, the article was written c. 2014, about eight year ago.
HP [Howard Pain, the interviewer]:
What advice would you have for any readers starting out in cave or technical diving?
BM [Bill "Hogarth" Main]
: Keep it simple and streamlined. Just take what you need and nothing more. If you don’t, that’s where your air goes—that’s where your energy goes, right there.
Excellent advice, IMHO--even for divers who are "only" recreational, open water divers.
rx7diver