Just my .02 cents... often students get hung up on the depth ##'s too much on what their card says and never really focus on the 'entire picture' of narcosis. for a bit of slap stick... the TDI
Deco card should say...
"if you drank last night, Sea Sick now..puked out your breakfast, out of shape, and diving in a cold dark current, you must tear this card up and never attempt a 150 FSW dive. You pretty much don't understand what tech diving is about."
Trimix card should say...
'ok 200 FSW and a S8hit load of stages with a gas in your mix that is used by clowns at birthday parties... You really should spend every day eating right, getting plenty of rest & have good cardio... if not tear this card up"
The advanced Trimix card should say...
'Ok we get it.. you are either a card collector or diving some really virgin wrecks... whatever the reason you have this card... (Picture of John waye on the card) a man's gotta know his limitations...enjoy this card now because when you get older... carrying double steel 120s and 4 stages does a real job on your back... but F&ck, it's better to burn out than it is to fade away"
Dive safe all