Recent comments in /f/explainlikeimfive

Ratnix t1_j9z8i7n wrote

Do away with the catcher. Use a building/fence as a backstop, and the batter throws the ball back to the pitcher. A couple of people in the outfield and an infielder.

It's not like there would ever be based loaded and no stealing. So there's not really a need for everyone covering a base.

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r3dl3g t1_j9z7otx wrote

What you're describing isn't "the metric system," and is commonly done in Imperial/American standard units in some fields (e.g. kPSI or MPSI for large units of pressure). Prefixes in units aren't monopolized by SI.

Liter isn't an SI unit simply because it's not the base unit of volume. Volume is inherently just built on distance measurements, and the SI system already has the meter, ergo the base unit of volume is the cubic meter.

"Lack of coherence" means it isn't derived explicitly from a core SI unit. The fact that it can be expressed in SI units without rounding doesn't matter.

This also ties to a huge misunderstanding that people have about the metric system. The strength of SI isn't remotely related to the prefix units (i.e. the "moving the decimal point over"). Instead, the core power of the metric system is that more complicated units are all derived directly from other units; so, 1 Pascal is explicitly 1 Newton spread over 1 square meter. 1 Newton is explicitly 1 kg accelerating at a rate of 1 meter per second per second. Building on those basic units is what makes the SI system as powerful as it is, as it means you don't have weird constants that you have to factor into all of your calculations (e.g. the wonderful world of pounds-force vs. pounds-mass).

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Hammurabi42 t1_j9z7o8w wrote

Imagine you had a belief. Something like "The world will end on November 3rd."

Now, Nov. 3rd comes and goes and the world doesn't end.

What you might think would happen is you would realize you were mistaken and admit you were wrong and move on. However, if the original belief was something very important to you, or something that you had made part of your personality, then you may have a great deal of trouble letting that belief go. You are in a state of cognitive dissonance.

It should be noted that cognitive dissonance is an almost entirely subconscious thing. If you were fully aware it was happening, it would be easier to resolve.

What can cognitive dissonance lead to? Well, in my example above the person could deny they made a prediction, insist they didn't mean the current Nov. 3rd but some future Nov. 3rd, or maybe insist the world really did "end" but in a spiritual or metaphysical way that only special people like them have noticed.

Note: my example above is (loosly) based on a real study published in a book called "When Prophesy Fails" written in the 1950's that popularized the term "cognitive dissonance."

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Ratnix t1_j9z6po7 wrote

>baseball where you need at a minimum a diamond, enough clear space for the ball to reasonably fly and a minimum of 7 fielders along with other equipment

While baseball is more difficult, you don't need the full complement to play. You need a bat and a ball and an open field, anything can be used to mark the bases. Gloves definitely help, but i have played without them. And you don't need a whole team. We've played with 4 to a side before. It's just better with the full teams of 9 to a side.

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Gyvon t1_j9z6fjm wrote

One thing is that it's dirt cheap to play. All you need is a ball and something to mark out goals, which can be just a few sticks.

Even then, it's not the most popular in every nation. America, Canada, and Australian football are more popular in their respective countries, and I believe Cricket's more popular in India.

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Tato7069 t1_j9z22fm wrote

That's what everybody said at the beginning, but no. They got to be the best at what they do because of how they do it, and sometimes that doesn't mean you can just do it differently. Sometimes people would lay a bunt down in the direction with no fielder, but you'll often be happy to see the guy who can hit it 400 feet take a bunt single against you.

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Gnonthgol t1_j9z1xpe wrote

I do not quite agree with you about baseball. You do not need a full diamond, especially with kids who can not throw far, hit far or run far. The space needed for a variant of baseball suitable for kids is roughly the size of a small football pitch, and the amount of players the same as well. Rowing as well seams quite expensive and complex nowadays but were very accessible when waterways were a major form of transport. And still today there are places where a rowing boat is just as versatile as a car and therefore just as common. American football can also be played by kids very easy. You do not need a full team and it can be played in a smaller format with say 8 kids and just a ball. Granted it can not be played on pavement or gravel like soccer though.

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DJKGinHD t1_j9z0s8h wrote

I don't watch baseball. I just learned about both the ban and the reaction to the ban from this post. That being said, couldn't the batters get the same analytical data and use it during practice to build the skill of hitting that gap they naturally avoid? It would make the shifting a disadvantage. If you go up to bat and see the team shift to right field because that's where you tend to hit, you use the skill you developed during practice to hit to left field.

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its-a-throw-away_ t1_j9z0h9f wrote

Wicked flame sources such as candles depend on convection to operate. Once lit, gasses in the candle's flame rise and cooler oxygenated air rushes in from the sides and below to replace it. As this new air approaches the flame it rapidly heats up, reacts with the fuel in the wick, ignites and rises, continuing the cycle. This is why the flame's colour transitions from blue (initial ignition) through orange and finally yellow (where the last of the evaporated fuel is consumed). This is also why a candle flame extends up from the wick.

Rapid air movement from blowing or clapping drastically increases the amount of air flowing past the wick, which elongates the flame and lowers the concentration of heat around the wick. Less heat near the wick reduces the rate at which its fuel vapourizes, which makes less of it available to react with the air.

The air itself absorbs heat. Slow moving air absorbs more heat per unit volume, so it more readily reaches the fuel's ignition temperature and sustains the reaction. Faster moving air absorbs less heat per unit volume, making ignition more difficult.

This is a long-winded way of explaining how blowing or clapping your hands cools the area around the wick to the point that ignition ceases.

A slight increase in airflow velocity beyond what simple convection produces actually improves ignition by making more oxygen available at the point of ignition. This is why blowing on a fire causes the embers to glow brighter and increase in temperature. But there's a tipping point beyond which the heat drawn away from the seat of the flame overcomes the more efficient ignition due to extra oxygen from the additional airflow.

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theicon77 t1_j9z0h3h wrote

Yes the good ones can. The problem is owners don’t pay for slap hitters to the opposite field. They pay for guys that can drive the ball. So over time more and more players are trying to drive the ball to get the large contracts. Eventually you don’t have players trying to go the opposite way because it is not in their financial interest.

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explainlikeimfive-ModTeam t1_j9z0dyg wrote

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st1r t1_j9yym6g wrote

Just making contact with a major league pitch is already incredibly hard to do

Making solid, hard contact is even harder

Many players do hit to both sides so they don’t get shifted by the defense, but many also focus on hitting it as hard as possible which means you give up some control over where the ball goes. The trend over the past couple decades has been to focus on hitting the ball as hard as you can rather than focusing on hitting it to a specific area of the field because the stats have shown that to be more effective.

If you’re hitting for power then you’ll naturally swing a little earlier on average because your bat speeds up through the swing, so if you hit the ball a little earlier you will hit it harder. But then it will also have the tendency to go in one direction. So a lot of power hitters tend to hit the ball to the same side of the field like 90% of the time. Batters who do this are often the best batters on their teams. Thus the defense shifts in order to limit the effectiveness of that batter.

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Turnip45 t1_j9yy6vw wrote

The barrier to entry for kids is “have a ball and some space to kick it around”.

In terms of participation you don’t need a full field, you don’t need grass, you don’t need special shoes, armor, uniforms, gymnasiums, an indoor space, etc etc. You don’t even need a goal - a couple of bags to mark the goal is fine. Kids don’t even need any particular supervision due to low contact nature, and versions of it can be played with almost any number of people and in parallel with other activities.

Compare to, say, baseball where you need at a minimum a diamond, enough clear space for the ball to reasonably fly and a minimum of 7 fielders along with other equipment. Or rowing where you need a boat, boathouse, river, and a whole team to turn up, or American football where you can kinda play but almost all variants require a fair number of people each time and a marked field of some description, or ice hockey where you need sticks, skates, and a fucking ice rink.

Adding: Association Football has heavily embraced an actual league system with promotions and relegations, and the league tiers extend all the way down to random pub and village teams. This enables widespread active participation in the sport at every ability level with a continuous line from playing on some local social team to the premiership football players at the top of the sport, providing a level of connection between fans and pro players that helps drive fan engagement.

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