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The Blue Hole in the Red Sea is the deadliest dive site in the world

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Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#221

Post by watwut »

ethbr0 wrote: post #124
ChrisBland wrote: post #96

I'm an avid diver; got certified as soon as I turned 12 years old and have had some great adventures and life lessons diving and continuing my training and education. After many many conversations and encounters on dive boats with others (some seasoned, most tourist / rec divers) - I believe that 90% of the industry sees diving akin to a roller coaster ride instead of Skydiving. The risks with scuba are there for you…

First class of dive course at CWRU: Older Navy diver instructor walks in "So I know each of you is coming into this class with different levels of experience. What we're going to do first is a short test on your proficiency for 20 minutes. It will be graded on completeness, not correctness. You are not expected to know all the answers. I'm just interested in gauging what you know. Be aware, there are a lot of questio…

Those who followed first sentence instruction did correctly one question. And ignored all the others in test that was supposed to be graded on completeness.

He also claimed the goal was to gauge their knowledge. Again, that was lie. And those who scribbled were literally trying to fulfill stated goal of test.

> It will be graded on completeness, not correctness. You are not expected to know all the answers. I'm just interested in gauging what you know.

In overwhelming majority of situations, of you sabotage goal of event due to following likely faulty mutually conflicting instructions, you will be blamed for it.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#222

Post by grawprog »

ant6n wrote: post #215
grawprog wrote: post #155

Earlier quoted context omitted.

We had a similar one of those in school. The first question of the test was 'read all questions before you start.' Then it had stuff like poke holes in the paper, draw things, random stuff, the very last question though was, 'Now that you've read all the questions, just write your name in the top corner and turn your paper over.' Yeah...a lot of my classmates ended up with holes and scribbles on their tests...

It’s pretty ambiguous, though. In tests you usually complete all questions. Why should you in this instance only complete the first and the last task?

The teacher also told us specifically to read everything before also doing anything.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#223

Post by robocat »

hwillis wrote: post #156
Syonyk wrote: post #154

Earlier quoted context omitted.

It's not actually the people riding like lunatics that manage to kill themselves on motorcycles at high rates. It's the old guys, riding back from "biker nights" at the bar, in full branded gear to include the do-rag and t-shirt. Lots of single rider, single bike accident with substantial alcohol in the blood. I've ridden for many years, and I also fly small planes, so I'm quite aware of my higher-than-average risk p…

The median age of riders is ~50 while the average age of fatalities is 42. People over 50 make up significantly less than half of fatalities. However, you are still kind of correct- the number of fatalities picks up strongly at 50+. People 35-45 tend to be the safest. People 50+ are still on average significantly safer than Motorcycle fatalities are heavily associated with risk-taking more than anything else. There a…

> The median age of riders is ~50 while the average age of fatalities is 42. People over 50 make up significantly less than half of fatalities.

I'm not sure if you were trying to imply there was some connection between those sentences? You could easily have more than 50% of fatalities over 50, and still get an average of 42 (for example, deaths clustered mostly in either twenties or fifties).

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#224

Post by kemitche »

henshao wrote: post #181
throw1234651234 wrote: post #166

Earlier quoted context omitted.

This is an irrational party(professor) trick that wastes everyone's time. An argument could be made for "read the (short) instructions at the start". An argument cannot be made for this. There is often very little value to skimming the entire question set before the exam.

I don't know about you, but for my tests on a curve where I might not be able to answer all the questions, doing the quick skim to answer the low hanging fruit before getting to the harder problems is a good way to make sure you don't run out of time and lose out.

I did the same, but if I'm doing that skimming and I know the answer to question 12 is (c), I fill in (c) and keep going. I don't read all the questions, then go back and try and remember which of the questions I knew the answers to off-hand. Instead, I'd do the test in 3 passes.

1. Answer all questions that I know the answer instantly or (for math type tests) can solve within a few seconds. Skip anything not quick. 2. Go back and answer questions that I know I can solve. These usually take a minute or two (since the easy ones should already be done). If there happens to be a question I know I can solve but also know will take "too much time," skip it. 3. If there's time left, work through any remaining questions (hopefully there aren't that many), making a best effort to prioritize the ones I'm more confident that I can solve in the time remaining.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#225

Post by watwut »

throw1234651234 wrote: post #166
s_dev wrote: post #142

Earlier quoted context omitted.

Other versions of this test include the last question being "Don't answer any questions". The habit the teacher was trying to impart was "read the whole paper" first before answering any questions -- particularly if there are multiple choice questions.

This is an irrational party(professor) trick that wastes everyone's time. An argument could be made for "read the (short) instructions at the start". An argument cannot be made for this. There is often very little value to skimming the entire question set before the exam.

I agree. More over, half of these have genuinly mutually exclusive instructions.

And from those mutually exclusive requirements you are supposed to pick the "least likely one" else you are wrong. It is good example how manipulation works however. You put people into unsolvable situation and then blame them.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#226

Post by watwut »

henshao wrote: post #181
throw1234651234 wrote: post #166

Earlier quoted context omitted.

This is an irrational party(professor) trick that wastes everyone's time. An argument could be made for "read the (short) instructions at the start". An argument cannot be made for this. There is often very little value to skimming the entire question set before the exam.

I don't know about you, but for my tests on a curve where I might not be able to answer all the questions, doing the quick skim to answer the low hanging fruit before getting to the harder problems is a good way to make sure you don't run out of time and lose out.

Why would you not answer questions you know straight away? That wastes time.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#227

Post by salawat »

hbrav wrote: post #193
Natsu wrote: post #183

Earlier quoted context omitted.

Sometimes this just makes me think that every pilot needs some IRF experience and a fuel gauge that has an alarm that says 'land now, you moron' or such.

Small airfcraft fuel gauges are notoriously unreliable. If it's reading low, yes, be alarmed. But sometimes the float gets stuck, so if your estimate for how much fuel you should have burned puts your fuel lower, trust that. At least in the UK, getting a private pilot's licence did involve a couple of hours of simulated IFR. Not enough to do anything complex. But enough to turn 180, and be able to follow detailed con…

Huh. Wait, aircraft use float based fuel gauges still? I thought everything had gone electro-resistive since you'll get the same measurement regardless of orientation of the tank if you place your sensors right.

I remember coming across that as a specific design challenge to overcome. Floats don't read the same when flying upside-down.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#228

Post by mohaine »

ddls wrote: post #150
Starwatcher2001 wrote: post #126

Earlier quoted context omitted.

If you really have only a vague recollection of basic safety checks you shouldn't be diving - seriously.

You should, according to PADI norms, be offered a refresher dive. It costs $10 more and you spend 15 minutes with a dive master reviewing basic skills before a normal dive. The dive master also then knows to keep you close during the dive.

This is exactly what the resorts I've been to do. Dives are free (All inclusive, Couples Jamaica) but if don't have a dive book with a signed off dive in the last year it is 50$ for a refresher/skills test.

I've normally felt really safe on these but once there was way to many people for them all to be babysat and the group actually got split up due to 'issues' that the following guide had to help with.

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#229

Post by hellbannedguy »

Syonyk wrote: post #154
samdixon wrote: post #120

Earlier quoted context omitted.

I have a similar theory about motorcycles. It's not batteries included, and some people ride like absolute madmen increasing the fatality rate.

It's not actually the people riding like lunatics that manage to kill themselves on motorcycles at high rates. It's the old guys, riding back from "biker nights" at the bar, in full branded gear to include the do-rag and t-shirt. Lots of single rider, single bike accident with substantial alcohol in the blood. I've ridden for many years, and I also fly small planes, so I'm quite aware of my higher-than-average risk p…

In the United States, cops pull over most bikes, especially after 10 pm. It's almost like they just hate bikers?

The bikers I know are not getting buzzed at the local watering hole, and aiming the bike home. It's not the 70's.

In my county, the fatal bike crashes are usually new high end high performance bikes, on country roads. They are experienced, but pushing it. They are cold sober.

The days of having a few beers, and driving home on the bike, or even an old car, must be down across the county?

Cops realized a while ago that most Americans have no qualms over arresting a guy over a DUI, and they are villigant.

To vigilant in my opinion. (I heard in Texas if a dui defendant can prove they were not physically, or mentally impaired, while doing a computer simulation, they might get out of a dui? This might be just a rumor? I feel it's more fair, especially when a marginal dui can significantly impair your economic viability for years, especially for the poor.)

In upper class neighborhoods, it's usually the only crime they can solve, after pulling over 50 sober drivers?

My brother got a DUI over .04 BAC. He also had weed in his system from the day before, and clumsily told the cop the truth when asked. Bored officer, "Did you take any drugs?". My naieve brother, "well yesterday I smoked some weed.". Arrested, and lost the case.

My point is the DUI scare is real among everyone, but the naieve.

When I had my motorcycle, I was pulled over so many times for no reason it was maddening. It's the main reason I don't ride anymore.

Getting pulled over for no reason other than a cop hoping to nab a marginal dui is really irritating.

I've gotten to the point where I have two dash cameras always activated, and I try to not go out past 10 pm in an old car.

(I can offer this, if you are ever in Marin County CA, expect to be pulled over if driving a motorcycle at night. Also expect to be pulled over if you look ethnic, or drive an older vechicle. We have a bunch of bored cops, and they look for anything they can to fill up that duty sheet. Oh yea, they peer into bars, and follow patrons home.)

Re: The Blue Hole in the Red Sea is the deadliest dive site in the world

#230

Post by watwut »

grawprog wrote: post #222
ant6n wrote: post #215

Earlier quoted context omitted.

It’s pretty ambiguous, though. In tests you usually complete all questions. Why should you in this instance only complete the first and the last task?

The teacher also told us specifically to read everything before also doing anything.

1.) The complete set of instructions was inconsistent and mutually exclusive. The two questions required mutually exclusive actions. Why pick last?

2.) That is standard boilerplate typically said due to people not reading whole questions. And it is not useful advice in general.

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