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This Martin Thompson talk is excellent. I've found time-stamping and handling GTD (good 'till date/time) orders consistently across nodes to be one of the most challenging bits of …

Here's one : https://www.jstor.org/stable/10.1525/mp.2006.24.1.49?seq=1 And another (follow the links to the article, but I thought that particular graph was most informative) : ht…

0.17 is a rule of thumb we use in diving. There are many like it which allow a little leeway in case there's a slip-up. pp02 can surely go higher than 1.2 (I know personally) befor…

It should be pointed out that the record depth in the area is not Tarek Omar's 203 meters as the article mentions, it's Nuno Gomes' 318 ( https://en.wikipedia.org/wiki/Nuno_Gomes_(…

I don't recommend anyone "inject" trimix ;) But jokes aside : Trimix is an (artificial) gas blend that includes helium, which is an inert gas that your body doesn't metabolize (tho…

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 div…

What instructors and dive-masters actually do (or should / are trained to do) for those dives is hold onto the first stage regulator at the top of the tank for the entire duration …

I'm an experienced diver (PADI dive-master, ACUC instructor, IANTD gas-blender and normoxic trimix diver, TDI hypoxic trimix diver and dive-master) with several thousands of dives …

Because - management fees, margins, and available capital can easily be modelled properly - you can easily set up constraints (like no fractional trading for your S&P example) - yo…