Way too complicated to explain very simply but I'll try:

Demand and supply:

If let's say, 95% of Americans decided they want to buy a AR15 rifle, the price of that gun would go up until the supply could catch up to the demand.( More people want item X, the price of the item X increases)

And let's not forget the gas/oil issue:

Before the Russian invasion of Ukraine, people liked Russia because of the cheap oil and gas, but after the sanctions, a big supplier was more or less taken out of the equation/ open market, so, prices of the items increase.

Item supply:

Grain could be a good example. During the UN agreement with Turkey and Russia, the price of grain-based products dropped because the key ingredient was more readily available(by amount) until the recent withdrawal.

During the first stages of the COVID pandemic, masks were also in very high demand, hence people buying them out and reselling them with a very high margin to other people.

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No. Colour spaces are complicated and make me cry.

are those compression waves similar to that of peristalisis in biology?

Again, you're talking about modern humans.

You can read about this hypothesis here. There are critiques of it, but those are of the evolutionary path, not the fact that humans are amazing endurance runners.

A girl that sat next to me at college used to drink 6-8 cans of pepsi consecutively

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It's not like people don't take part in potential lethal sports now either. Plenty still do

Doubtful. Our ancestors chased food for survival. Racing an animal for that far isn't very efficient. The first recorded guy to run a marathon (to Marathon) died of exhaustion. We have so many resources that people do it for leisure.

The fact that marathon running is an Olympic event that people train for their entire lives directly disputes your comment. Not to mention the fact that ultra marathons also exist.

Our ancestors would be like "but why?"

Jousting armour is insanely protective.

In normal combat you have to balance manouvrability and visibility with protection (can't fight if you can't see) but in a jousting contest your only opponent is coming from straight ahead, and you never have to get off your horse.

So jousting armour gave you impenetrable protection at the expense of being basically immobile, if you look up a frogmouth helmet you'll see that you can barely see anything out of them, in fact you have to lean your head forwards to see out at all.

That helmet was also usually rivited to your chest plate so you couldn't turn your head either, your arms had nearly now movement (since all you had to do was hold a lance straight).

All that meant there were no gaps or weak points in your armour which meant there was no risk in being hit somewhere unarmoured.

Some later jousting armour was barely even armour it was more like a small shed on top of a horse that you sat in rather than something you wore.

On top of all that, your opponent also wasn't trying to kill you, jousting lances are blunt, and usually designed to be weaker than the armour they're aiming at, so it was common to see lances splinter on impact (which also had the benefit of looking cool).

And you had a shield attached to your shoulder that sat in front of your chest as another layer of armour, and that's where your opponent was aiming, the shield was the easiest place to hit (being a large flat surface, as opposed to the rest of your armour being angled and curved to deflect blows) and the aim was to dehorse your opponent, so hitting the shield was the best way to do so.

Yeah you're right. My BS in business is from 11 years ago and I never worked in that field so sometimes I get the terms confused these days.

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The one in Washington, DC also fits that description.

We've evolved to function under constant stress with little sleep for survival reasons.
Imagine our ancestor resting after escaping a predator. If bad luck happened and another predator spotted them, those who could get up and mobilise enough energy for another escape survived.
But that only works for a while.
I hope your dad got enough rest between those shifts or it is likely to have taken a toll on him/his health.

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Would it be somewhat accurate to say it's a mathematical trick that makes it easier to analyze the propagation of the compression wave by pretending its a moving particle instead, simplifying the math?

absolutely, if I was on a duplex circuit (two freqs) the receiver would send a dah, for every word received correctly, and if he wanted it resent, then send a ditdit.

People are lazy, so didn't really have to use Q codes in that situation, you just increased your send speed until either you weren't comfortable, or the receiver started asking for lots of repeats.

Water is cooled with a chiller, and pumped to FCU (fan coil units, basically a heat exchanger with a fan). The FCU blows air through its coil as the cooled liquid is pumped through the coil, the water absorbs heat, cooling the air. The heat then returns via the chilled water system to the chiller to be cooled again and go back out.

The chiller is a mechanical system using refrigerants to cool the liquid. The other output of the chiller is heated water, which then typically goes to a cooling tower (basically another heat exchanger) water flows through the tower as a fan pulls ambient outdoor air, which removes heat from that portion to go back and cool the chiller.

Yes, pretty much. If you are on a duplex circuit, the receiver will throw a "dah" for each word received, and if they missed something in that word, will throw a "ditdit", and the sender will resend the last word.

When you are doing this style, you can quickly figure out how fast the other guy is.

Say what?

That's our modern, civilised human baseline, maybe. Our ancestors, who did chase animals to exhaustion, would laugh at our mere marathon.

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arg, forgot the K! lol (dahditdah)

>I don't think there is any actual architectural reason, just aesthetics and design

I think you mean functional reason - aesthetics and design is what architecture is all about.