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Why thank you! When I post my plans to go to 600 feet with spare air as my bailout can i count on you? :)

Keep it to 1.2 ppO2, so 6/90-ish in that spare air and you're good.

Wait do you have the card for that? :D
 
Full Cave or [-]Trimix[/-] at a minimum.
It would get rid of some of the butthurt whining as well as deep air stupidity.
I can see some rationale on Trimix, but regarding Full Cave and Deep Air...:

"The term ethnocentrism was coined by William G. Sumner, upon observing the tendency for people to differentiate between the ingroup and others. He defined it as 'the technical name for [the] view of things in which one's own group is the center of everything, and all others are scaled and rated with reference to it.' He further characterized it as often leading to pride, vanity, beliefs of one's own group's superiority, and contempt of outsiders."
 
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I can see some rationale on Trimix, but regarding Full Cave and Deep Air...:

"Ethnocentrism is the tendency to believe that one's ethnic or cultural group is centrally important, and that all other groups are measured in relation to one's own. The ethnocentric individual will judge other groups relative to his or her own particular ethnic group or culture, especially with concern to language, behavior, customs, and religion.

The term ethnocentrism was coined by William G. Sumner, upon observing the tendency for people to differentiate between the ingroup and others. He defined it as 'the technical name for [the] view of things in which one's own group is the center of everything, and all others are scaled and rated with reference to it.' He further characterized it as often leading to pride, vanity, beliefs of one's own group's superiority, and contempt of outsiders."
Actually, Groupthink is the more appropriate general term in this instance rather than ethnocentrism which refers more to culture, customs and religious bias.
The symptoms [of Groupthink] show up as an illusion shared by group members that they are invulnerable to bad outcomes, an unquestioned belief in the moral superiority of the in-group, an inclination to collectively rationalize support for the group’s decisions, stereotyping of out-group members as weak and wrong, self-censorship through the withholding of dissenting opinions, a perception that other in-group members are unanimous, direct pressure on dissenters to conform, and the emergence of "mindguards" whose role is to protect the group’s preferred position from counterargument. Janis expected this constellation of biased reactions to cause critical flaws in the procedures group members adopt to solve important dilemmas.
 
We could really use some mindguards to stop all this nonsense talk of deep air/ non cave folk... Moderator? Ban Them!
 
Why do I keep getting rolled in with this crowd? LOL

Dude you keep up with this reputation and we will have to quit diving together or the wkpp / dir guys will hunt you down!! LOL
 
I can see some rationale on Trimix, but regarding Full Cave and Deep Air...:

"The term ethnocentrism was coined by William G. Sumner, upon observing the tendency for people to differentiate between the ingroup and others. He defined it as 'the technical name for [the] view of things in which one's own group is the center of everything, and all others are scaled and rated with reference to it.' He further characterized it as often leading to pride, vanity, beliefs of one's own group's superiority, and contempt of outsiders."

... I believe what he's describing there is more aptly referred to as hot air ...

... Bob (Grateful Diver)
 

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