Also up vote because obviously the only correct answer. It was based on golden source material. Therefore could not fail.

The grenade thing depends on the generation of grenade. Also depends on the country of origin. Assuming we are talking about the American M67 one you see in most movies, there are 3 different generations of safeties.

Quick basics of an American grenade- the spoon is the handle looking thing that is sticking out the top and runs along the side. Under it in the head of the grenade is a spring that is always trying to push the spoon off its hinge and make it fly off, while then starting the fuse and the whole bang process. The safety pin (a codder pin with a ring on one side to pull on) runs through the head of the spoon and is held in place simply through binding into its hole/channel by tension provided by the spring. For a little bit of extra safety the end of the pin sticks out about a quarter inch and is bent for a little, but easily straightened and pulled out with the ring (look up a picture and you will see what mean).

The old ones were just the safety pin held in place by the spring/spoon mechanism. But if you had excessive vibration or just enough pressure and you had pre-straightened the safety for pulling ease, it would negate the spring pressure and the safety pin could slip in and out with ease (thus easy to pull with teeth for Rambo effect). People didn’t trust it, so it was typical to then use electrical tape to hold the spoon down wrapped around the full body and then a bit extra folded back to make a quick pull tab. To throw: pull e-tape, pull pin, throw. The army then added a secondary safety to the safety. It was this secondary safety clip that held the spoon down to the head, providing constant tension and stopping the vibration loosening issues. They were also intentionally designed to have to get pulled off in opposite directions. To throw: (I am left handed) sweep safety clip left, pull pin right, throw. This was in my opinion the best setup and my favorite of grenade generations. Apparently this was about 50/50 with other others. So the army then came out with their third generation, the “confidence” thumb guard thing. It is a metal flap switch that locks/latches the safety clip onto the pin ring. I thought it was dumb. Most people hate it. But credit where credit due- it is impossible to fuck it up. Now to throw: thumb/sweep up on confidence latch, sweep left on safety clip, pull right on pin, throw.

I think they left out the most obvious questions-

Are you super rich?

Can you afford elective heath operations that will potentially prevent life ending illnesses or affliction?

Can you afford expensive lifestyles tailored for your health?

Can you afford to reduce all forms of stress in your life and live with no worries?

Congenital? No. Acquired? Yes. The area of the brain that processes and interprets sound has to develop. Without sound input as a child, that won’t happen.

Current leading theory of tinnitus is called the ‘central gain’ theory. This is where the brain becomes accustomed to seeing signals from the ear at a certain level, and when that neural level is no longer at that level it will add in its own noise to make up the difference. This noise is then perceived as a tone or sometimes a broadband sound, commonly described as either a ringing or a whooshing sound. Sometimes it can also be described as crickets. Depends on the person and cause. Not all hearing loss comes with tinnitus, but most tinnitus comes with hearing loss. In audiology school we had a whole class on tinnitus and covered many interesting aspects exactly like your shower thought here and went over papers on every angle you could think of. It was fun. But in the end, the brain has to at a minimum know what sound is to even perceive sound.

He needs a doctor, and fast. Best case scenario it is ulcerative collitis. Worst case he is getting an MRI of his brain and brainstem to find out it is a central tumor and will only be getting worse.

And? What were the results?? This man has done science for us, what were the results?!?!?

Looking passed the absolutely insane answer here, no one has even brought up the whole issue of AC vs DC. Batteries are DC, while your fridge that plugs into your wall running on AC. I know they make DC ones, but it isn’t like they are interchangeable.

I agree with you as a realist on the situation. We will never stop manufacturing them, at least for the foreseeable future. But we forget that something like recycling is the last stage of the 3R’s to follow. We must first look to reduce consumption. We need to find alternatives where possible, and switch away from these forever chemicals anywhere we can. Next, while “reusing” is not the best term here, but we need to find ways to extend the life of the products that we are forced to use and try to use them up in every way we can. Then lastly we need to be recycling it as best as possible before we send it to an incinerator, or more realistically a developing nation landfill.

Reduce -> Reuse -> Recycle is listed that way for a reason. Everyone always just jumps to the final stage then argue about how bad the recycling is while not even considering ways to reduce or reuse throughout the entire process.

How much am I responsible for? If I weigh the tires (all 4) when I buy them, then use them for X years, then weigh them when I get rid of them for the next ones- then that is how much I responsible for. And I can divide it by the years I had it for a yearly number too.

And that is how much microplastic I would agree I am responsible for with the tires. There is also the carbon cost of making them, supplying them, and disposal. But we were talking about microplastics…

600$

To employ someone at 10$/hr, their actual cost is probably close to 15$/hr when you factor I them coming in to work in the office and all the costs associated with that. At 15$/hr it takes 40 hrs to cost 600$ to thr company. That is one week of work for one employee. This means that they could have a 600$ fuck up every week and still break even over hiring a person. And we are talking about just one person. Chat support is nor.ally contracted out as entire teams and departments.

The copyright expires in 2044. The Perter Jackson series came out 2001-2003. From a studio point it is approaching the now or never time. They need to make one within the next few years to be able to make a 3rd one just before the end of copyright. From a studio buisness perspective this makes sense and is kind of a no-brainer.

Read the book! It was so good as well. Not entirely the same as the movie. The movie was more of the premise with book plus some exerpts, but still amazing in its own way. I really enjoy both. Really easy read because of how it is written, and so much fun as well.

https://www.powerengineeringint.com/renewables/lcoe-for-offshore-wind-now-on-par-with-coal-bnef/amp/

https://www.powerengineeringint.com/renewables/lcoe-for-offshore-wind-now-on-par-with-coal-bnef/amp/

Covid actually had almost no impact on the prices and they continued to level off a little lower. The surprising one is the onshore wind remaining on par with solar and continues to drop (albeit slowely).

https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide.aspx

“Today there are about 440 nuclear power reactors operating in 32 countries plus Taiwan, with a combined capacity of about 390 GWe. In 2022 these provided 2545 TWh, about 10% of the world’s electricity.”

https://world-nuclear.org/information-library/safety-and-security/safety-of-plants/safety-of-nuclear-power-reactors.aspx

There have been two major reactor accidents in the history of civil nuclear power – Chernobyl and Fukushima Daiichi. Chernobyl involved an intense fire without provision for containment, and Fukushima Daiichi severely tested the containment, allowing some release of radioactivity.

Yes- a track record of one plant failing due to Soviet incompetence and political blunders; and the second failing due to checks notes a 9.0 magnitude almost direct earthquake and ensuing 133 ft tsunami.

I can see that critical thinking isn’t your strong suit, but I’m willing to comment it out with you instead of just down voting.

If the price of solar is already the lowest -and still dropping- then how is the most expensive option that takes about a decade to implement a better option for right now? This apparent point of diminishing returns is only beginning to manifest in even lower prices than this 2019 chart. And this diminishing returns point is only in the cost of the panels dropping; they are still getting better in technology and improving efficiency while maintaining low prices. If your argument is “solar can’t continue on this trend forever” -no one expects anything to consistently drop almost 90% every decade. Of course it will level out. And when it does, it will STILL be the cheapest option.

Huge up front costs.

https://world-nuclear.org/information-library/economic-aspects/economics-of-nuclear-power.aspx

“On a levelized (i.e. lifetime) basis, nuclear power is an economic source of electricity generation, combining the advantages of security, reliability and very low greenhouse gas emissions. Existing plants function well with a high degree of predictability. The operating cost of these plants is lower than almost all fossil fuel competitors, with a very low risk of operating cost inflation. Plants are now expected to operate for 60 years and even longer in the future…”

“World Nuclear Association published Nuclear Power Economics and Project Structuring in early 2017. The report notes that the economics of new nuclear plants are heavily influenced by their capital cost, which accounts for at least 60% of their LCOE. Interest charges and the construction period are important variables for determining the overall cost of capital. The escalation of nuclear capital costs in some countries, more apparent than real given the paucity of new reactor construction in OECD countries and the introduction of new designs, has peaked in the opinion of the International Energy Agency (IEA). In countries where continuous development programmes have been maintained, capital costs have been contained and, in the case of South Korea, even reduced. Over the last 15 years global median construction periods have fallen. Once a nuclear plant has been constructed, the production cost of electricity is low and predictably stable.”

TLDR: If you weren’t already on the nuke train when it was going, the upfront costs are too much to make it worth it this late in the game. You are better off just getting solar/wind + battery. If you already invested in nuke, then you are good to keep updating them.

After rereading this in the morning/afternoon and not late night I realized my mistake. BPPV is normally the posterior, more infrequently the anterior, and to be true up/down vertigo only it would have to be both canals at the same time. The vestibular organ is odd. Either way, this whole scenario doesn’t even sound like bppv (peripheral) and is most likely something up line in the brain (central).

Go see neuro. Get an mri at least.

Unlike the othe comment, this DOES sound like it could be BPPV, where something like the epley maneuver would work. Typically we would use the Semont-plus maneuver (same idea, slightly different). Or there is a fun half somersault maneuver the person could try on their own.

Bppv will be brief but intense episodes lasting seconds with lasting nausea for minutes and exasterbated by head movements. You will also see their eyes jumping or flicking (nystagmus).