Hi all,
I haven't read some of the later posts yet but I would like to throw some of my thoughts out there.
So far the discussion has been on what's better Table vs. Computer vs. know your dive site etc... Each of these represents a "strategy" that a diver is going to use in in their decompression. As a strategy, each has it's advantages and disadvantages. Is any one better then the other across the board for all divers? I doubt it.
Now, IMO, (and a few others) the important thing is that during a dive (or period of diving like a week long trip) a diver chooses their strategy and then follows it. If your strategy is your computer then great. Follow it. But what happens if your computer fails, say day three during your seven day trip, what now? Your strategy has failed. Do you go to another computer that may be running a different model inside the black box. Do you now just dive tables? Change strategy?
How about on that 200 ft decompression dive. Your computer fails? What now? Back up computer? Back up to the backup computer? For that matter, how do you know it has failed? Multiple computers reading different things? Bottom timer/depth gauge to track depth and time separate from your computer? Still, what's your strategy now? Whip out your pre-cut contingency tables? What if you failed to anticipate your current situation? Anyway, enough of that you've got the point I hope.
Now if you learn some decompression theory, develop some situational awareness allowing you to pay attention to depth and time, become adept with some simple math and plan your deco in your head (or wet notes), then you have a robust and flexible strategy that will probably not fail you at a less then convenient time. Furthermore, your strategy is applicable to many different types of diving and can be built upon as you advance.
So, I hope these thoughts will positively contributed to the discussion. Happy New Year!
Jonathan