Recent comments in /f/explainlikeimfive

Biokabe t1_j6hf4wy wrote

Because things get in the way.

Mountains, rivers, hills, buildings, ravines, forests and more are just some of the things that get in the way of roads just being straight. Most of the time, it's much cheaper to build around something instead of going straight through it. Other times, you have no choice but to curve around it; it doesn't matter how much you'd like to make the road straight, you're not going to get permission to tunnel through Notre Dame cathedral.

Bridges are orders of magnitude more expensive to build than regular roads, so if you can avoid building a bridge over something, you will. Tunnels are even more expensive to build. Both tunnels and bridges are more prone to collapse in the event of natural disasters, and both of them introduce areas of natural bottleneck in traffic flow; if it turns out that you didn't make the tunnel wide enough for the amount of traffic you need to accommodate, it's much more expensive to widen the tunnel later on, and you'll likely have to shut down the tunnel while you're widening it.

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Gnonthgol t1_j6hf3cg wrote

There are a lot of places where it is dificult to build roads. Such as hills, mountains, lakes, rivers, oceans, wetlands, etc. In addition to this roads tends to be built where people live. It is more efficient to build roads between the towns in an area then to build it straight and build lots of smaller roads connecting the towns to the main road. So if you look at a map you will see that the roads tends to go in straight lines connecting all the towns, mountain passes, bridge sites, etc. together. But that means a lot of turns as there are lots of these along the route.

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JerseyWiseguy t1_j6hf0cg wrote

Like most things, it usually comes down to money. It costs far more money to have a road go through the center of a hill than it does to go over or around it. It's cheaper and easier to build a bridge at a narrow section of a river with solid bedrock on both banks than it does at a wider section with sandy banks that will need to be reinforced.

Another major factor is existing property roads and lines. Many years ago, "roads" were often just cart tracks or horse trails, upon which people just rode through the most-convenient terrain (avoiding muddy areas, thickets, craggy rocks, etc.). When those areas became more settled, property lines were often drawn based upon where the existing paths/roads were. Thus, if you tried to straighten out the roads, you would have to keep separating parcels of land and demolishing homes.

And, of course, climate must also be considered. You don't want to build a road right through an area that is prone to flooding or avalanches or wildfires, just to keep the road straight.

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pandastealer t1_j6hez2l wrote

The roads came before cars here and were probably started as walked trails at some point so it wouldn't have been necessary for them to have been straight and flat.

But in a place where the roads were designed post car invention I reckon its a mix of how the ground underneath I and how the topology of the land is, avoiding sandy or shale patches and areas that might flood is probably a priority to prolong the life of the road surface itself.

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TheDMisalwaysright t1_j6hex1j wrote

Yeah, definitely, what I meant was that at first it wasn't seriously considered, root of a negative was just end of the road, and then later it was seen as a useful curiosity, something to help in intermediate steps but living purely in the theoretical/mathematical space, but only with Schrödinger they realised that it was part of nature and could be an answer in itself, not just an intermediary.

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152centimetres t1_j6her5i wrote

like i said, macros are just as (if not more of) an important factor as the actual calories, here's an article from harvard about why a calorie is not a calorie, which i think is a good place to start! do some research, and listen to your body!!!

my best advice tho is not to worry too much about counting calories, listen to your body and only eat when you're hungry, and try to eat the foods that you're craving, because your body will tell you what it needs (but like if you're craving fast food, try to eat homemade foods with similar ingredients that will give your body what it needs while still keeping you relatively healthy)

that said, all things in moderation! if you want chips here and there thats fine! a soda once in a while? why not! your body is whats keeping you alive so try to give it the love it deserves!!

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SirReal_Realities t1_j6her10 wrote

Why are you taking medication? Is it prescribed? Who prescribed it? Why did they prescribe it?

Ex: A physician might have prescribed an antidepressant for you after having a baby because they felt you had postpartum depression.

Ex: A pediatrician might have prescribed you medication because your parents gave them information that suggested it would help you; are you just taking it because you “always have taken them”?

If you are taking meds, and know why you are taking them, then you need to talk to a psychiatrist (not a psychologist or therapist) about why you are taking them and are they the best treatment.

If you are taking meds and you don’t know why, and are a grown up and in charge of your own healthcare, then you should ask your current physician what they are for, and should you continue them? What happens if you stop? How can you safely stop taking them if you BOTH think it is a good idea?

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sandiercy t1_j6heh6o wrote

Where I live, we have a bunch of straight roads, we also have areas where it is literally impossible to build roads so we have to go around (things like mountains or bogs). Coastlines also make it nearly impossible to have a straight road.

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blkhatwhtdog t1_j6heeki wrote

You need to be observant of the land and the vegetation.

You see some trees, there's probably water closer to the surface than anywhere else.

And oddly enough 'divining rods' do work. I saw this guy from the water dept walking across the lawn with this bent coat hanger in his hands. I asked WTF he said he was looking for water leaks from the main. when I asked him what the hell that does, he had me walk around the yard with it loosely in my hand, sure enough it moved, he pointed out that I was standing between the house and the water meter, that would be where our water pipe comes in....again I walked back and when it moved again, he said that's where SFEK... that's where Damnit again.... that's where the sewer pipe would be.

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churningtildeath t1_j6heaua wrote

I went to many therapists as well and I later found that their whole profession is BS. Something I learned to get myself out of depression. Depression itself isn’t real unless you decide to make it real. When you do things like feel sorry for yourself all you’re doing is preventing yourself from recovery. It’s just like ghosts. Some people believe in them and some don’t.

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Constant-Parsley3609 t1_j6he6r3 wrote

You can make tic tac toe as many dimensions as you'd like. It's easy enough to do on paper. 4D tic tac toe is only 27 squares. 5D is an overwhelming 81, but there's nothing stopping you from drawing 81 squares on a piece of paper.

The issue is that tic tac toe becomes a worse game the more dimensions that you add. The entire point of the game (if there even is a point) is to block the other person from winning.

The more directions that lines can point in the more pointless it becomes to try and block your opponent.

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Jkei t1_j6he2oe wrote

Absolutely. As long as total in is smaller than total out, your weight is on a decreasing trend. 1500 in vs 2500 out is still net -1000 which is very substantial.

As a rough estimate, a kilogram of body fat contains about 7000-9000 kcal worth of energy, so this particular diet would see you lose one kg of weight in roughly a week's time.

Similarly, if you were comatose and getting fed 1500 kcal a day, you'd be at 1500 - 1800 = -300, so still losing weight but only 30% as fast as the example diet --> about 1 kg a month.

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Freedom-No-781 OP t1_j6he1pi wrote

Talking to a nutritionist does sound like a good plan, unfortunately I live in the middle of nowhere USA so I'd have to travel a bit to see one.

I'm overweight for my height at least not in my mind tragically so, 220 at 5'9 my goal is both to put on muscle while also losing weight, a lifestyle change is exactly what I need tbh, I don't want to diet, simply eat less which I guess is "dieting" but it's not as strict, I mean I could eat 1500 calories of McDonalds and call it a day.

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SirReal_Realities t1_j6hdt9m wrote

You say that like it is a bad thing. Research shows that people with a greater grasp of “reality” are less happy. Science is about facts, and facts don’t care how you feel; A positive mental attitude is about focusing on ideas that bring you contentment in life. Your negative thoughts might be “right”… but if they are not productive, or actively harmful, then how is that Better than constructive self-delusion? Go ahead, tell your nephews and nieces that Santa isn’t real; Your family will love you for that come Christmas. /s

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Constant-Parsley3609 t1_j6hdoc0 wrote

Dimension is a broad mathematical term, that very loosely means "ingredient".

The numbers that you are used to 1,2,3,4 etc have one ingredient. That ingredient being "1". We call these "1 Dimensional". Such numbers are ussually useful, but sometimes they are not able to capture the reality of a situation.

You can count cookies with 1D numbers, but when you want to describe WHERE you are, you need three ingredients (UP, RIGHT and FORWARD). Hence we live in a "3D world".

You might use more complicated numbers to describe your situation in more detail. Perhaps you want to know where you are but also how hot it is, which would require 4 ingredients (4 dimensions).

Physicists generally are often interested in WHERE and WHEN, because they are specifically interested in movement. The physics of a situation that doesn't change does not require a professional after all. Hence, (for their purposes), 4 ingredients are needed to describe a situation.

Sometimes physicists will use 6 ingredients: 3 for where (position) and 3 for where will you be (velocity).

Sometimes they are interested in a situation where some ingredients don't matter. In simple harmonic motion, there is a simple repetition, so only one ingredient is needed to describe the where and another for when.

By changing which number systems are used for the mathematics, we can make calculations easier or clearer or link two problems that seem unrelated at first.

Sci fi have often (incorrectly) used the word dimension as a stand in for "universe" or "world". And this has led many snake oil salesman to making videos that claim the "fourth dimension" or "fifth dimension" to be some mystical hidden place.

Dimensions don't have an order so calling anything the 4th dimension is misleading in and of itself, never mind the weird pseudo science that the term is used to push.

Cake could be said to be 3 dimensional. Any basic cake is some combination of flour, egg and milk and so we could label each cake with a 3D number and discuss which 3D numbers correspond to nice cakes and which correspond to failed cakes. For example (0,0,1), or a cake containing only milk, would be a failed cake.

If I then came along and showed you a chocolate cake, suddenly I'm adding a "fourth ingredient": chocolate. But there's nothing mystical about chocolate and it's only "4th" in the sense that you weren't considering it beforehand and now you are.

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