Rob Stewart Investigation

[Dan]

My understanding from the people I spoke with is that the 1.16 PO2 mark is not an absolute. It's not like a cliff if you take one step over you fall. It's more like a sliding scale. The higher your PO2 the more chances you have of experiencing oxygen toxicity. I recall reading about one diver in a book (Shadow Divers?) who regularly ignored his PO2 levels until the day he was hit with a massive event and died. I'm sure on this forum there are many many people who have much more knowledge than I do about this phenomenon. I invite them to weigh in on this.

I listened to the freaking 12-hour CDs of Shadow Divers on my 1,500-mile roundtrip driving & backpacking to Big Bend NP, Hiking Big Bend. I don’t remember about such a low PPO2 had been fatal to a diver. Even the Wiki on Oxygen Toxicity mentions about a much higher number of 1.4 when it begins to have an affect to diver. Oxygen toxicity - Wikipedia

Check your number again and post the reference link here.

 

[Rosborne]

I listened to the freaking 12-hour CDs of Shadow Divers on my 1,500-mile roundtrip driving & backpacking to Big Bend NP, Hiking Big Bend. I don’t remember about such a low PPO2 had been fatal to a diver. Even the Wiki on Oxygen Toxicity mentions about a much higher number of 1.4 when it begins to have an affect to diver. Oxygen toxicity - Wikipedia

Check your number again and post the reference link here.

As I said, I wasn't sure which book I had read it in. If you just recently listened to Shadow Divers, and its not in there, then it must have been another book. But I don't think I was saying 1.16 was the limit, I was saying that the limit is not absolute--sometimes you can get away with straying over 1.4 to 1.6, and sometimes you can't. I was pointing out that I'd read about a diver who regularly went over the 1.6 limit and survived--until he didn't.

 

[tursiops]

As I said, I wasn't sure which book I had read it in. If you just recently listened to Shadow Divers, and its not in there, then it must have been another book. But I don't think I was saying 1.16 was the limit, I was saying that the limit is not absolute--sometimes you can get away with straying over 1.4 to 1.6, and sometimes you can't. I was pointing out that I'd read about a diver who regularly went over the 1.6 limit and survived--until he didn't.

"I didn't say it, I was quoting someone else, and if I did say it, it was a joke." Right. The sheep are lying.

 

[wnissen]

As I said, I wasn't sure which book I had read it in. If you just recently listened to Shadow Divers, and its not in there, then it must have been another book. But I don't think I was saying 1.16 was the limit, I was saying that the limit is not absolute--sometimes you can get away with straying over 1.4 to 1.6, and sometimes you can't. I was pointing out that I'd read about a diver who regularly went over the 1.6 limit and survived--until he didn't.

Sorry, I'm confused by your statement here. Is 1.16 a typo or not? That's the question that kicked this off.

 

[Jack Hammer]

Typos happen and really shouldn't generally be held against the author. I'm more concerned about the follow up stating 1.16 is not a typo. This shows a serious lack of understanding of a quite simple concept that is very relevant to rebreather diving. There is so much discussion on it that it really exhibits a serious lack of basic research.

 

[Rosborne]

Sorry, I'm confused by your statement here. Is 1.16 a typo or not? That's the question that kicked this off.

1.16 is a typo, though it's hardly worth saying that on this forum. People will believe whatever horrible things they want to believe regardless of what I say to correct it.

 

[tursiops]

1.16 is a typo, though it's hardly worth saying that on this forum. People will believe whatever horrible things they want to believe regardless of what I say to correct it.

First you defend it, now it is a typo. Got it.

 

[RyanT]

1.16 is a typo, though it's hardly worth saying that on this forum. People will believe whatever horrible things they want to believe regardless of what I say to correct it.

Except previously in this thread, you said...

My understanding from the people I spoke with is that the 1.16 PO2 mark is not an absolute.

So if it was a typo, I don't think you would have been talking to someone about 1.16 as a limit. I'm confused.

 

[kelemvor]

Clearly the guy isn't an RB diver, he's just a guy who wrote a book... about something he doesn't understand all that well...

 

[The Chairman]

Wow. You guys are sounding a lot like FB at the moment. Let's all take a chill pill with the accusations and counter-accusations. A lot of work was put into this and while I don't agree with all the conclusions or even some of the predicates, I'm sure some will find value. For that matter, I doubt I will agree with the court's final decisions here. I don't feel at liberty to divulge my opinion on certain aspects of this, so I will simply read and pontificate on what I feel can't get me into legal trouble.