how can one archieve lucid dreams?
lucid dreaming isn't real >>>/x/
>>8270736
Google it. too long to explain
there are a few techniques but it all depends on if you freak out or not.
>>8270736
For a while I frequently had dreams where the context was that I was lucid dreaming, but I actually wasn't. I also often tend to be aware that I'm dreaming in general if I've gotten stuck on excessive introspection in daily life.
When did you grow out of set theory?
>>8270707
Why should i grow out of set theory?
>>8270707
When I learned about category theory
>>8273014
test
Hi /sci/
so I'm reading Calculus Made Easy (this book)
https://www.gutenberg.org/ebooks/33283
and in the fourth chapter the author says
[math]y = x^2[/math]
[math]y + dy = (x + dx)^2[/math]
[math]dy = 2x*dx + (dx)^2[/math] <-here he says (dx)^2 is negligible
[math]\frac{dy}{dx} = 2x[/math]
My question is, how can one rigorously disregard [math](dx)^2[/math] in this case? I know how to differentiate [math]y = x^2[/math] using the limit definition of a derivative, but I'm interested in the mathematical concept behind these "degrees of smallness" and why the one of second order can be dismissed. Basically, what is the reason we can say [math](dx)^2[/math] is negligible.
>>8270436
(dx)^2 is the smallest number possible that's higher than 0
that small
>>8270450
OP here
I thought that was dx?
So is there an axiom or something that says [math](dx)^2 = 0[/math] always?
>>8270436
The square of a positive number less than 1 must be less than that number
Does every human being (take the age 20) hear in the same volume?
Probably not.
>>8270342
top tier ear pussy got any more?
>>8270347
This. Would lick!
Also, it is the same king of question as: "Do all humans see the same colors?"
do animals possess consciousness ?
there is an important difference to be considered here - im not talking about physiological consciousness in the sense of being able to experience sensation
there humans for example who are able to avoid obstacles and are physiologically able to see but they are not aware of it and think they are blind
if animals only had the physiological form of consciousness they literally would not be aware of their pain and suffering would be impossible for them
is there any credibility to this position ? proponents argue that animals dont possess prefrontal-cortex-like structures in their brain where human consciousness is located
some philosophers argue that they lack the necessary language-skills to develop consciousness by using self-reflection
Two dolphins are sitting under a dock and they see two people. One asks the other "are they conscious?" The other says "we can observe them making noise at each other, but there's no evidence they are communicating."
>>8270361
woah
really makes you think
>>8270334
>there humans for example who are able to avoid obstacles and are physiologically able to see but they are not aware of it and think they are blind
would blindsight be possible for an unconscious creature?
in the experiments i've heard of, consciously blind people reported some hard-to-pin-down feeling e.g. that a shape on a screen was an X etc.
could mean blindsight is dependent on such conscious feelings, i.e. that it emerges from conscious sight and is not the more basic kind
What is charge?
An inherent property of elementary particles
>>8270243
avatar fagged as a gorilla from my EM drive powered high IQ satellite
>>8270243
simple definition:
A conserved property of some elementary particles.
full definition:
https://en.wikipedia.org/wiki/Charge_(physics)
how do you feel about being a weird organic blob of fat that tries to maintain it's current structure?
>>8270241
Surprisingly good actually. My anxiety and stress comes from other sources.
>>8270241
Bretty good, but I often feel bad that no other organic blobs of fat enjoy being in my presence
At least this small furry one that I imprison in my home enjoys my touch
>>8270241
>it's
1. contraction of it is
2. contraction of it has
>its
the possessive form of it
Me and the whole class ended up in a situation where we had to invent a sum whose result was 1 (it was a small step in a bigger problem)
Every single student used 0+1 except me.
I used 0.7 + 0.3
What does it mean?
>>8270227
>What does it mean?
That your dumb. Your intellectually superior classmates found a way using only natural numbers while your pleb brain needed the fucking rationals to answer properly.
Your IQ is probably 10 points below your classmates. At least.
>>8270236
>0
>natural
>>8270236
This
OP's only hope is to get into CS
What would be the maximum velocity an airplane would need to guarantee a 100% survival rate from a Tsar Bomba detonation?
2700 dollars per hour
>>8270222
That depends.
Dependent upon time of release, time of detonation, ect.
I think most importantly one would have to take into account the composition of the atmosphere at the detonation site as ensure how fast the shockwave propagates following detonation.
Is physics inherently subjective?
>Are inherently objective things inherently subjective ?
No.
>>8270221
Because every theory is based on observation, and as of now at least all observation is subjective, all physics is subjective as a science
>>8270238
Is this line of thinking a modern phenomenon?
So what are objectively the hardest and most rigorous engineering majors? I know Electrical and Chemical will be up top and Civil and Industrial will be towards the bottom. What about Mechanical? Somewhere in the middle?
>>8270207
>>8270207
I think I might have gum disease even though I maintain pretty good oral health. Anyone have at home remedies for gingivitis that you don't mind sharing?
Nope, sorry. They're all a secret.
You can gain access for 39.99.
Thanks doc, ill buy your book later
But really I'm pretty worried about this and I don't want periodontal disease
Sorry Anon, I can't make any exceptions for this paywall. Else my profits for this year will only be 2,000,000,000.00 - 39.99, severely impacting my ability to remain competitive!
Sorry bud, you'll have to figure it out on your own. Why don't you just do the research yourself? And publish with me of course... :^)
There is a potential meme that, once discovered by memetic evolution, would spread throughout the world over night, give us unimaginable pleasure and turn the world into a utopia of unprecedented moral worth.
But it will never be discovered.
>>8269940
Really makes you think...
We already found it. It's called Christianity.
>>8269940
What did he mean by this?
How do you cope with cognitive limitations?
Is it even possible to get a PhD in a STEM field with a 100 IQ?
>>8269840
Tortoise and the hare.
Be that tortoise that worked his ass off when the hare was laying back being a cocky little shit. It goes far in the eyes of professors and employers.
>>8269848
inb4 hare decides to one day give a shit and surpasses the tortoise in a fraction of the time
life just isnt fair and all the "try your best" feel-goodery in the world wont change it
I don't even bother trying because it would be pointless.
What's the motivation for learning abstract algebra?
>>8269763
It's gay faggotry but it was a mandatory course here.
Different objects under particular functions have the same structure. By naming the structure and studying its properties, we've proven things about all of those different objects and their functions.
>>8269763
Gaining a deeper understanding of symmetry and how it underlies all mathematical subjects you will study in your lifetime