Math is Scary - Drowning is (probably) Scarier

[Sifossifoco]

The scariest thing about this thread is that after five pages of profound discussions about underwater complex mathematics and measurement units nobody has fixed the spelling mistake in the title, yet

 

[Storker]

I had to go back to the first post to see who this advice was meant for. It was directed to new divers. I read through the article on SAC and gas usage calculations and found the advice sound enough, but came away thinking this is putting "the cart before the horse". We need to get those new divers to pay more attention to their SPG'S especially on deeper dives.

This.

When I had fewer dives below my weight belt, I always brought a slate with my min gas pressure at various depths. Math done topside, no need for underwater math. Pretty failproof, even if I were more narked than I'd appreciate and hardly were able to add 2 and 2. Worked pretty well.

These days, those pressure values are so ingrained in my brain that if you woke me up in the middle of the night and told me my depth, I could probably tell you my min gas pressure.

 

[АлександрД]

I said about metric system just to keep this talk

We need to switch to base-12. Then dividing by 2, 3, or 4 will be easy while dividing by that Yurrupean 10: too hard.

Why not, you can find good team for diving by base 12

Good luck lobbying that change

A perfectly logical decision

Сalmness, only calmness!

It is very easy. you even can count on fingers.

But my main point was just about calculation simplifying.
If you experienced enough, you have to know just one value - where you will have "UPpppS !". It is something like point of return.
And you do not need to know anything about mathematics...
Just red sector on your SPG.
In good condition - Ups - when the arrow came to the red sector.
In the deep, in the blue, or in the difficult conditions - just double width of red sector in your mind - it will be the return point to the surface.

 

[dmaziuk]

you can find good team for diving by base 12

Don't have to look far either:

 

[BlueTrin]

Don't have to look far either:
View attachment 624590

Can try the guys from Majestic 12 too, at least they won’t probably object to this being too bizarre

 

[rvojr]

Roger, thanks for the post. I also enjoyed the speaking sidemount interview. I like the NJ/NY spin on things.

 

[boulderjohn]

We need to switch to base-12. Then dividing by 2, 3, or 4 will be easy while dividing by that Yurrupean 10: too hard.

Good luck lobbying that change

I would have expected Storker to be more receptive to this change, given national heritage. I admit that I did not look this up to confirm it, but I was taught years ago that the Vikings had a base 12 system, and it had a big impact on northern European traditions. It is supposedly the reason we have many things in dozens, 12 inches to the foot, hours in the day, people on a jury, etc.

 

[dmaziuk]

I would have expected Storker to be more receptive to this change, given national heritage. I admit that I did not look this up to confirm it, but I was taught years ago that the Vikings had a base 12 system, and it had a big impact on northern European traditions. It is supposedly the reason we have many things in dozens, 12 inches to the foot, hours in the day, people on a jury, etc.

You made me look. Here's real scary Norvegian math: https://archive.bridgesmathart.org/2013/bridges2013-191.pdf. I need to go wash my brain in bleach now.

 

[ThatDogDontHunt]

I would have expected Storker to be more receptive to this change, given national heritage. I admit that I did not look this up to confirm it, but I was taught years ago that the Vikings had a base 12 system, and it had a big impact on northern European traditions. It is supposedly the reason we have many things in dozens, 12 inches to the foot, hours in the day, people on a jury, etc.

Vikings had jurys?

 

[dmaziuk]

Vikings had jurys?

Yes, if you could spin a saga well enough to entertain them, they would let you live.