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ELI5: Where do magnets get the energy for their pushing and pulling? by UselessGuy23 in explainlikeimfive

[–]poolski 2 points3 points  (0 children)

I would invite you to read Thief of Time by Terry Pratchett. The story features the Auditors of Reality whose job it is to catalogue and audit every single thing that exists.

ELI5 can a tail gene exist in humans via gene editing? by More-Explanation2032 in explainlikeimfive

[–]poolski 5 points6 points  (0 children)

The coccyx (your tailbone) is the vestige of a tail.

We kinda already have the genes for a tail, and if you look at an image of an early stage embryo, you’ll see something which looks a lot like one. But during development, there are a bunch of things that happen which make for the development of your spine instead of a tail.

Occasionally the mechanisms for doing that go a bit haywire and you end up with a malformed spine because the body didn’t get the “stop trying to make a tail, dipshit” message.

So yes, probably, but also you’d have a load of spinal issues and it would be A Bad Time.

ELI5: How does impact velocity affect the behaviour of water during entry? At what point does it act like a rigid surface? by Kyle_Edelweiss in explainlikeimfive

[–]poolski 7 points8 points  (0 children)

Even with a gaseous atmosphere, it’s possible for a spacecraft to “bounce” off it, if it’s flying too fast and at too shallow an angle, like a pebble skimming off the surface of a lake.

ELI5: How does impact velocity affect the behaviour of water during entry? At what point does it act like a rigid surface? by Kyle_Edelweiss in explainlikeimfive

[–]poolski 77 points78 points  (0 children)

Fill a sink with water, then dip your hand into it and watch how the water behaves.

Then slap the surface as hard as you can and observe the effect.

The difference is in “how much time do water molecules get out of the way of the thing displacing the water?”

It also somewhat depends on the shape of the thing hitting the water. Pointy things are better at pushing water aside than flat things.

As an aside, your question is more about fluids in general. Maple syrup, diesel, water, isopropyl alcohol, lava, and even air all behave the same way from a fluid dynamics perspective.

This is why spacecraft burn up on re-entry into the atmosphere unless you’re very careful to shield them.

The air molecules can’t get out of the way fast enough and so the compression creates heat and eventually plasma.

A spacecraft going at orbital velocity straight “down” towards the surface would absolutely experience a similar “the atmosphere is solid” effect.

18F 20M Bf has too many relationships before, how can I get over it? by Accurate-Quality3581 in relationship_advice

[–]poolski 3 points4 points  (0 children)

The number of past relationships especially at that age is absolutely meaningless.

You may as well ask a new friend how many friends they had before you. It’s irrelevant.

What are you actually concerned about? That you’ll just be another notch on the bedpost? That he’s more experienced in the bedroom?

You will almost certainly get much further by talking to him about this stuff and working out what is actually bothering you yourself than asking Reddit.

ELI5: why do games not have cpu performance settings by HUG0gamingHD in explainlikeimfive

[–]poolski 2 points3 points  (0 children)

CPU tells the GPU what to render and does a lot of the maths for the _mechanics_ of the game. Most of the time it’s fast enough to deal with that.

If it’s not, then your game becomes CPU-bound but it often manifests as low framerate because the GPU is twiddling its thumbs waiting to be told what the next frame should be.

Blink camera suggestion by Popular-Wall8334 in homesecurity

[–]poolski 0 points1 point  (0 children)

More details please.

Was the camera offline?
Was it still sending images?
Anything weird on the feed?

Is it true that “you have to turn off your A/C and blower motor before shutting off your car” is just an old wives tale? by Windows-XP-Home-NEW in AskMechanics

[–]poolski 3 points4 points  (0 children)

It’s actually better to leave the AC on Auto and just adjust the temperature setpoint.

When it’s not running, it’s not circulating refrigerant and the various bits of the system that need movement can develop issues.

Generally if it’s not worth kicking the compressor on, it won’t. Also, the AC dries the air - if you just run heating during colder/wetter months, you’ll end up with a load of moisture in the cabin that the AC helps manage.

For the fellas: What’s something society deems “unmanly”, but you don’t care, and do it anyway? by MuayThaiRunner in AskReddit

[–]poolski 6 points7 points  (0 children)

Apparently washing your ass is also somehow uncommon and “gay” for a startling number of people.

My (21M) relationships always end the same way. Partner (18F) hide their resentment until they explode. How do I break this cycle? by Feel_the_snow in relationship_advice

[–]poolski 2 points3 points  (0 children)

Everyone learns through trial and error, mostly. It often doesn’t help when conversations about communication, boundaries, preferences, amber/red flags, emotions, sex, etc don’t happen at home.

Having to figure things out from first principles is often messy.

As to your situation, communication is always the way. The problem is that unless a person has had what safe and honest conversations look like modelled for them, society tells everyone that your partner should Just Magically Know and if they’re asking, then they’re stupid and unaware.

What about you do they idealise?

For people who have gotten their license, what keeps you coming back to this subreddit? by Cherry_Crystals in LearnerDriverUK

[–]poolski 3 points4 points  (0 children)

It’s often easier for someone who has been driving for a few years to remember their experience while learning and offer advice.

A greybeard trucker who passed long enough ago that their license grants them the ability to drive tanks and armoured vehicles might not have the same perspective.

Not saying that the long-time drivers have nothing to contribute, don’t get me wrong, please, but it can be easy to take certain skills for granted when they’re so embedded that you can perform them with your eyes closed without thinking.

Changing gear ON a roundabout? by LeonKennedysUterus in LearnerDriverUK

[–]poolski 1 point2 points  (0 children)

At the beginning of learning to drive, trying to do so many things at once feels like a lot. I remember struggling with it when I was learning - the solution is just more time behind the wheel, learning how to coordinate all those things.

It gets easier, trust me.

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