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Much of the velocity on a home run comes from the pitch (equal and opposite reaction) rather than the bat speed. So it’s not that easy to hit a home run on a 50 mph pitch.


This is so incredibly false. They're not throwing +80mph pitches at the MLB home run derby. Batting practice pitches are about 60mph.


You are very incorrect: https://physics.stackexchange.com/questions/18222/how-does-t...

Incoming speed makes significant difference to exit velocity.

If you were going for max distance, you would want 100 mph pitches.

In home run derby, they are optimizing for ability to get a good repeatable swing with enough power to go over the fence. If they were playing in a park with like 440 ft fence, they would need faster pitches.


That's actually not true.

The distance the ball flies has a lot more to do with bat speed than ball speed (something like 5mph for 1mph, if I recall correctly).


Okay, true. But it should be pretty easy to make contact, at least.


Conservation of momentum says otherwise -- the faster the ball is going, the more change in momentum it needs, the harder it needs to be hit.


If you want a ball to bounce further off something, throw it harder.


Yes for elastic shocks, but bat to ball is not an elastic hit (well, barely one, to the point where the physics you refer to don't matter).


Or the farther the bast needs to bounce off th ball.


Have you ever looked at a pie chart of mammal biomass by species. It goes Humans then cows then everything else is way back. I strongly strongly doubt that big dumb slow cows would be number 2 in biomass absent our loving burgers.


Uhm... I don't understand what the connection to my comment is?

I did not (and did not intent to) make any reference to biomass, not indirectly either. At most, maybe cows now bs. wild bovine herds of the ancient past, which even if we only look at the number of buffalo killed in the US must have been gigantic, so no less than we have cows now, at worst only slightly less but I doubt we have reliable figures about the size of herds before humans killed many e.g. for Africa, Asia or India. As a Middle European, I know we had plenty of large bovines but killed them quickly early on, for example https://en.wikipedia.org/wiki/Aurochs.

I made no comparisons human-bovine.


You mentioned the huge number of bovines in the past. I strongly doubt there were anything like the 1.5 billion cows there are now. One reason it’s impossible is that we have literally transformed huge land areas from forests and other types into land for cows. If you don’t get how what I’m saying related that is fine.


> I strongly doubt

Based on what?

https://www.flatcreekinn.com/bison-americas-mammal/

"The Bison: from 30 million to 325 (1884) to 500,000 (today)"

So the estimate for the number of buffalo only in North America alone already includes hundreds of millions. Then we have Africa, Asia and Europe.

That is easily that many bovines. The Eurasian steppes are (and were) even more vast than the ones in NA (https://upload.wikimedia.org/wikipedia/commons/b/b0/Steppe_P...). Map for Africa, steppe and savannah: https://exploringafrica.matrix.msu.edu/wp-content/uploads/20... (also remember Africa is much larger than shown on our common Mercator maps, so those areas are even larger than they appear)

There is no reason to assume the herds on other continents - before human hunting - were any less than the ones in NA. And bovines were not limited to the savannahs and steppes, just that there were the largest herds. Just look at the distribution map for the aurochs -- https://en.wikipedia.org/wiki/Aurochs#/media/File:Aurochs_di... -- it is much larger than just the steppe areas.

It is not just bovines either - other groups of which include animals like deer, giraffes, elephants and many others are also plant eating large mammals.

Also, I don't understand this modern need of saying things like "I honestly believe" and, in your case, "I strongly doubt". Feeling "strongly" does not improve the quality of your argument.

In your first reply you even used "I strongly strongly doubt " - riiiight... I would like to see more focus on the facts than on the feelings. Or do you feel that we are in some sort of competition here?

> If you don’t get how what I’m saying related that is fine.

You still did not explain what your comparison of human to bovine biomass was supposed to be about, which was your original reply.


Not so simple, remember the inquisition?


Do you mean multiplicative? Or linear? Why would it be exponential?


Any one malfunctioning passenger is sufficient to fail the overall flight. Assume each is independently probable of malfunction. If we know nothing else about the passengers, we can only model them as having some average rate of successful flight without malfunction, say 99.9%.

Say there are 100 passengers. We roll the dice 100 times, once for each passenger.

The success rate for the overall flight would be 0.999 ^ 100 = 90.4% -> About a 10% chance of flight failure.

If there are 400 passengers, we get 67.0%, about a 33% chance of flight failure.

Given enough passengers per flight, few or no flights reach their destination.


I think they mean it's 1 - prob of any person getting sick ** number of people on plane


It would only go in half if they issued double the shares and didn’t get any assets.

In this case, the expectation is that the value of Unity equals roughly the value of the issued shares.


Good thing there are other languages for other peoples preferences!


Not sure where you live, but where I’m from, an increase/decrease in home value affects your proportion of the overall property taxes but not the absolute amount. If everyone’s home goes down by 20% then everyone gets same tax bill.


On a sufficiently long timeline, the government has to pay more for land/payroll/other services if all the land prices increase because working people will want more pay to be able to afford their own land.

Everyone would get to pay the same tax bill proportionally, but not nominally.


That sounds like a European or maybe Canadian thing. Everywhere in the US I've been, it's been a predetermined rate of your home's value.


Not sure why you were downvoted. As a Canadian I’ve never heard the expression northern provinces, because that’s nonsense they basically all start at the border.


While this is correct, I can understand any confusion. I've never seen a Canadian address form that said "Province or Territory: _______". I'm pleased if a form switches from asking for 'State' to 'Province' when the country is changed.


What are you talking about?


In the US stock ownership is ... complicated. Effectively all shares in all public companies are owned by the Depository Trust & Clearing Corporation[1].

When you buy a share of a company, you hold that share at a broker. That broker in turn uses a clearing company which then in turn moves shares around between accounts at DTCC on a net basis between brokers. The only company in this chain that knows what shares you own is your broker. To everyone else in the world your share is held by, for example, Fidelity or Vanguard.

You retain every economic right to the share, you just don't _technically_ own it. This gets more complicated with margin accounts, where as part of the margin agreement you agree to allow your broker to lend your shares to shorts, so for some periods of time you may not actually own the shares you think you own.

[1]: https://en.wikipedia.org/wiki/Depository_Trust_%26_Clearing_...


They already have the pitchers facing 3 hitters (or ending an inning) rule


yes, rule 5.10g

For National Association play only, the starting pitcher or any substitute pitcher is required to pitch to a minimum of three consecutive batters, including the batter then at bat (or any sub- stitute batter), until such batters are put out or reach first base, or until the offensive team is put out, unless the starting pitcher or substitute pitcher sustains injury or illness which, in the umpire-in-chief’s judgment, incapacitates him from further play as a pitcher.

https://content.mlb.com/documents/2/2/4/305750224/2019_Offic...


Get rid of the end of inning clause too.


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