but that would require me to admit I am over 40!Hydrotac Stick-on Bifocal Lenses, 2.00 - Walmart.com (work great!)
or
BuildMask - SeaVisionUSA (with gauge reader lenses - also work great!)
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but that would require me to admit I am over 40!Hydrotac Stick-on Bifocal Lenses, 2.00 - Walmart.com (work great!)
or
BuildMask - SeaVisionUSA (with gauge reader lenses - also work great!)
Who cares? Very useless thread.
I admit the likelihood seems remote, but my only point is that just because such an oddity hasn't been reported by anyone to the knowledge of anyone here on SB doesn't mean it hasn't happened or might not happen. Some posters seem supremely confident there is no potential issue with this. I'm not that concerned--just pointing out that the likelihood is not zero.
but that would require me to admit I am over 40!
Actually, Therac 25 (thanks Lorenzoid for a very interesting read--I had not see this before) illustrates my point here. To grossly simplify for those who will not google it, Therac 25 was a new technology electron beam machine offering two different and incompatible methods of delivering the energy. On prior machines, there was a hardware interlock to prevent the improper mode from being used. The Therac 25 replaced the hardware safety in favor of software security interlocks. It had no track record. It then had documented malfunctions where the wrong mode was engaged, repeated in a similar fashion. Analysis led to the discovery of the software fault.
Someone hit a very good point earlier.
"'Most tech divers know what's in their tank anyway"
This is so true. I was once told before a complex, task loaded cave dive to guess my pressures before I looked at my gauges. If I was more than 10bar (150psi) out, I probably shouldn't be trying to do that dive.
Why can't photographers do the same? It's also much less critical for you guys too!
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My background is actually hardware--and a bit of RF to boot--not so much software, so my initial thoughts were more along the lines of signal interference due to having an RF or ultrasonic data communication system next to (and sharing a power supply with, etc.) the existing circuitry.
Actually, Therac 25 (thanks Lorenzoid for a very interesting read--I had not see this before) . . . .
These are not the facts with AI. AI is not new tech. AI, from the beginning, had software isolation from the dive computer deco functions. AI is used by many different manufactures in many different dive computers. . . .
I don't think it is that people think the likelihood is zero. I think it's that people find the probability to be on the same scale as the probability that the computer will crap out for any reason. Even a Petrel can crap out. But, it's probably more likely that a battery will spontaneously develop a bad cell and die or a battery compartment O-ring will leak or whatever than it is for AI to cause the deco calculations to be wrong. . . .
My background is actually hardware--and a bit of RF to boot--not so much software, so my initial thoughts were more along the lines of signal interference due to having an RF or ultrasonic data communication system next to (and sharing a power supply with, etc.) the existing circuitry. Would they integrate it all together on an ASIC? Maybe there are isolation issues. I just don't know.
Maybe a manufacturer would rather direct their resources elsewhere.
Maybe it's just my inexperience showing, but I know what my pPO2 (max) and CNS% are going to be before I get in the water. And those things aren't going to change because I got in and there was s stronger current than expected or I had an extra exciting few minutes for some reason.
Being able to quickly and conveniently check my tank pressure is a much higher priority to me than checking my pPO2 or CNS%. If I have to hit a button to page to look at some data, I would rather have to hit the button to page to pPO2 or CNS%.
It is ironic (to me) that some people think those things are so important to check mid-dive that they want them on the main screen but yet will argue that tank pressure shouldn't be on the computer at all. Shouldn't you also have a really good idea of what your pPO2 and CNS% are without having to check them during a dive?