SolidGrue @ solidgrue @lemmy.world

I'm just this guy, you know?

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2 yr. ago

This just in, scientists unveil "a loop of wire"

I keed, I keed. Glad to see materials science improving technologies we have for new applications.

That ... That's baller. I'm "doughy" at best, and its all I'll ever be.

People are more buoyant in salt water because it has higher molar mass. Humans on average are about 90% density of water by mass so about 10% of your frame would float above the surface, which is generally enough to expose your nose. Of course you can articulate your neck, float on your back, tread water...

Salinity also matters. Salty water you might be up to 3% or 5% more buoyant, pound for pound, compared to fresh water.

Really, it depends on how fat and how salty, but generally the difference is less than 5% by mass.

Swim.

Not get splashed or crowded by kids, mostly.

edit: lol, sorry. misinterpreted the question

Public pools have a shallow end and a deep end. It's difficult (but not impossible!) to drown in the shallow end because you can just stand up, but you can still swim.

Most humans, especially fat Western humans, are naturally buoyant. Completely inert, most (fat) Western people will float above the bottom of their nose (because we're fat.) Very lean or muscular people tend to be more neutrally buoyant or even negatively buoyant (sink), YMMV.

Most important thing to remember as an Aquatic Mammal is you WILL get water in your nose, and sometimes down your windpipe. DO NOT PANIC. It burns, you will want to cough. Resist that urge. If you are under water or do not have free air passage, DO NOT COUGH. Control the urge and break the surface, then you can go ham coughing and sputtering.

The most important thing about being in and around water is to be comfortable. If you're not comfortable, you're too deep. Get shallow.

source: PADI certified diver

Need help from the Internet? Make a statement.

I can't speak to the quality of actual locksets or recommended any products, but LockPickingLawyer on YouTube has a number of short videos discussing smart locks. My impression is most of them are trash at just being a lock. The ones made by traditional lockset manufacturers probably aren't generally good at being smart, but I've been wrong about major brands' commitment to open standards before.

Assuming you can find a decent lock that talks Z-Wave, I think you're on the right track with Zwave2MQTT and a USB dongle. I'd be squeamish about using a Pi specifically in a mission critical security control system for a couple of reasons (reliability, complexity, WiFi interference), but as long as you have keyed backup, it'll probably be OK.

I'll leave it to others to recommend the locks, but as I mentioned in another post her, most battery operated Z-Wave devices, in my experience, report their battery life. Most of mine seem to go from 100% to 70% to dead in about a day though, so accuracy might be hit & miss.

Maybe just leave one door with an old school keyed lockset as a plan B.

My battery operated Z-Wave sensors all report their battery life. You'd need to dig into the integration docs to know for sure but frankly I'd be surprised if they didn't report it as an entity.

+1 for Shattered Pxel Dungeon! The game play is devious in its simplicity but still incredibly rich and nuanced. The Dev takes great care to keep the content fresh & balanced. Plus the community is great.

I see Systems Engineering analogies in a lot of complex natural systems. It's a great model to understand how the world around you works, as long as you remember it's only a model.

For example, I optimize my navigation around town sort of like the OSPF network routing protocol. I consider the speed limit & number of lanes to be analogous to the link cost, traffic lights as Layer 3 hops, and stop signs as Layer 2 hops. I consider the local highways to be my "backbone area" so navigation is optimized to find the shortest path from wherever I am to the nearest major highway. Sometimes the solution takes me a mile or two out of my way, but I'll avoid 4 or 5 busy lights by taking a back road or cutting through a residential block.

In fact, the airline network is similarly structured: for a given carrier, routes among their hubs are their backbone area, and routes between regional airports in different regions connect through one or two hubs. As a traveler between two regional airports, you're likely to fly to the hub closest to your destination and meet a second leg back out the the other airport. All to better if you just live near a hub.