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What exactly is life? What is living?
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Self reproducing evolving organisms.
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>>8679736
*that eat and shit
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>>8679714
>Life
a whole tumbling mess of shit that lead to the self-experiencing you. Enjoy the anxiety, it lasts forever.
>Living
the process of life. Dont let the philosophers confuse you with their useless definitions.
Anonymous
The surgeon who wants to perform a head transplant by 2017 2017-02-15 03:29:50 Post No.8676604
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The surgeon who wants to perform a head transplant by 2017 2017-02-15 03:29:50 Post No.8676604
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The surgeon who wants to perform a head transplant by 2017
Anonymous
2017-02-15 03:29:50
Post No. 8676604
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>http://www.bbc.co.uk/newsbeat/article/37420905/the-surgeon-who-wants-to-perform-a-head-transplant-by-2017
Is this bullshit?
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>>8676604
If it is not he is gonna need a good lawyer.
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looks like he successfully did it on a monkey
they only kept it alive for 20 hours which is way to short to see the psychological effects. the animal would probably go crazy and kill itself
I think it's possible tbhfam
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>>8676604
it would be a body transplant, not a head transplant, I have little trust in his abilities if he does not even get the basic facts right
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Everybody and their mama knows that making a measurement of a quantum system causes the quantum wavefunction to collapse from a superposition of probable states into single state.
But, what is it about taking a measurement that makes this happen?
As a sloppy example, if I want to measure a glass of water and I pour it into a measuring cup, the act of pouring the fluid causes residue to be left behind in the original vessel, changing the quantity.
That's how measuring water changes the measurement, right?
Now, if I aim my eyeball at a distant star, my retina absorbs that light whereas if my eyeball were absent, that light would strike the Earth and bounce off. So I guess that's how looking at a star changes the state of the entire known universe.
Now, what is the quantum analog? How do we "know" that observing electrons in the double-slit experiment actually forces the probability wave to coalesce into one factual state for that electron? It all reeks of superstition to me. Is this just a remanifestation of that mythical beast we used to call God? Well, nevermind that musing question. My question is, how do we "know" that quantum measurement changes the state of the universe? How do we "know" that the universe was not in that state prior to measurement?
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>>8675074
Too deep for 4chan
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>>8675074
>As a sloppy example, if I want to measure a glass of water and I pour it into a measuring cup, the act of pouring the fluid causes residue to be left behind in the original vessel, changing the quantity.
>That's how measuring water changes the measurement, right?
People don't actually think like this, right?
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It's like flipping a coin in mid air. When the coin is spinning in the air it's in superposition. In order to see what side is facing up you need to stop it from spinning, or interact with it. Making the coin stop spinning is what collapses the wave function. Kinda like that, but with microscopic particles moving at the speed of light.
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>student raises hand
>reiterates everything the professor just said (poorly) before asking his question
REEEEEEEEEEEE
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>that kid that asks a question to the professor from a vsauce video
Literally should be kicked out of uni just for that
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>>8675122
What was the question?
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>>8675119
>He didn't read the course syllabus
JUST END IT
Anonymous
Is biotechnology a dead end or not? 2017-02-17 02:05:01 Post No.8681741
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Is biotechnology a dead end or not? 2017-02-17 02:05:01 Post No.8681741
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Is biotechnology a dead end or not?
Anonymous
2017-02-17 02:05:01
Post No. 8681741
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I'm 1.5/3 years into the course and what I've studied is linear algebra, calculus, biochemistry, General and organic chemistry, kinetics and process modelling and energy and resources. In addition to this I've worked in the lab the past 2 semesters to produce ethanol and organic acids from fungi.
Now there's more stuff I'm going to do but still I'm unsure if I should drop our or not. People are telling me that its all a joke. What do you think?
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>>8681741
lmao, it's all a ruse, go innawoods for a few months and understand how bamboozled you've been.
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I'm into my first master year of biochemistry and i'm learning about x-ray cristallography, drug design, plant interactions, the plant cell, etc etc.
It gets way more focussed down the line.
You just need these basics before you can understand the specific concepts like making synthetic DNA or how system biology works.
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>>8681747
I was just thinking about the job opportunities. I'm not getting cornered into a newfag field am I?
Anonymous
Calculus/Analysis proof 2017-02-17 05:56:11 Post No.8681220
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Calculus/Analysis proof 2017-02-17 05:56:11 Post No.8681220
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I was thinking about an interesting question:
If two functions f and g are equal at a point x, does that mean their derivatives are equal?
At first I thought yes, this is intuitive, but then I realized that if the two functions are only equal at x, then this doesn't hold. Then I thought, what if they are equal inside of an interval. Say [a.b]. Will it hold. Well, I haven't done analysis but I have taken calculus so I wanted someone to check my proof.
Theorem: Let f and g be two functions that are at least equal in the interval [a,b] and differentiable in the interval (a,b). Their derivatives will also be equal at least in every point inside (a,b).
Proof: First, lets pick an arbitrary c inside of (a,b). We know that the following limit must exist:
[math] \lim_{h\to 0}\frac{f(c + h) - f(c)}{h} = k[/math]
As f(c) = g(c) I will immediately replace it to get:
[math] \lim_{h\to 0}\frac{f(c + h) - g(c)}{h} = k[/math]
Now this, by definition, means:
[math] \forall \epsilon > 0 \exists \delta > 0[/math] such that [math] 0 < |h| < \delta \implies | \frac{f(c + h) - g(c)}{h} - k | < \epsilon [/math]
So this means that there exists some mapping from epsilon to deltas. Lets suppose
[math] \delta = w( \epsilon ) [/math]
Now consider the set:
[math]E = \{ \epsilon [/math] such that [math] w( \epsilon) < min(|-c+b|,|-c+a|) \} [/math] where min takes the minimum of the two numbers.
And define the new mapping
[math] w_2 ( \epsilon ) =
\left\{
\begin{array}{ll}
w( \epsilon ) & \mbox{if } \epsilon \in E \\
min(|-c+b|,|-c+a|) & \mbox{if } \epsilon \notin E
\end{array}
\right. [/math]
From this definition we get that [math] w ( \epsilon ) \geq w_2 ( \epsilon ) [/math] for all epsilons.
Which means that we can freely replace the new deltas found by this mapping and the limit will still hold. So:
[math] \forall \epsilon > 0 \exists \delta = w_2 ( \epsilon ) > 0[/math] such that [math] 0 < |h| < \delta \implies | \frac{f(c + h) - g(c)}{h} - k | < \epsilon [/math]
Cont.
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Cont:
But if h is smaller than delta, and the new deltas are defined to ensure that when added to c, the result will be inside of [a,b] then for all h, f(c+h) = g(c+h). So:
[math] \forall \epsilon > 0 \exists \delta = w_2 ( \epsilon ) > 0[/math] such that [math] 0 < |h| < \delta \implies | \frac{g(c + h) - g(c)}{h} - k | < \epsilon [/math]
But what this proves is that:
[math] \lim_{h\to 0}\frac{g(c + h) - g(c)}{h} = k[/math]
Proving that the derivative at any point of (a,b) of both functions will be exactly the same. [math] \blacksquare [/math]
So, how good is this? Is this too weak logically? Could it be too much for such a simple result? Please tell.
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Let f (x) = x
Let g (x) = -x
They have the same value at (0,0)
The slope at (0,0) and all other points is 1 and -1 respectively.
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>>8681236
Nice job reading literally only the first sentence when I bothered to latex all that shit.
Anyways, I realized that too but I used instead x and 2x in my mind.
I am more concerned about the case when the functions are equal not only at an isolated point, but in an interval around a point.
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What is a room temperature liquid that has an electric conductivity on par or higher than copper's
It would be ideal that it was not extremely corrosive to copper
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shameless self bump
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Mercury isn't AS conductive as copper, but it's pretty close
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>>8681089
tibtech.com/conductivity.php
I guess so, do you think it would interfere with a magnetic field going around a copper tube its inside of?
Hi, can someone please help me with this problem. I've spent tons of hours trying to formulate a solution but it's of no use. The assignment is meant to be easy but it poses a challenge for me. You should use the law of sines and the law of cosine on this one. Please help, much appreciated! Thank you in advance. PS. This isn't homework.
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? = 210*sin(70°) + 150*sin(70°+(130°-180°)) + 125*sin(70°+(130°-180°)+(120°-180°))
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>>8679806
False answer, the heck. XD. Never Mind, problem isn't meant for anyone except the elite.
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climate science btfo
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>>8678622
So earth sciences aren't science either?
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>>8678622
goddamn people focus too much on the name.
I've never met a single computer scientist / cs student / professor / software developer that seriously thought they were scientists or that they were doing science
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>>8678625
that's the rule.
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Can someone explain the Yoneda lemma in layman terms? I'm sorry became a brainlet please forgive me I love you.
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>>8677010
no, nobody can
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>>8677350
someone has to be able to
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>>8677010
In mathematics, specifically in category theory, the Yoneda lemma is an abstract result on functors of the type morphisms into a fixed object. It is a vast generalisation of Cayley's theorem from group theory (viewing a group as a particular kind of category with just one object). It allows the embedding of any category into a category of functors (contravariant set-valued functors) defined on that category. It also clarifies how the embedded category, of representable functors and their natural transformations, relates to the other objects in the larger functor category. It is an important tool that underlies several modern developments in algebraic geometry and representation theory. It is named after Nobuo Yoneda.
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http://www.slate.com/articles/health_and_science/science/2017/02/counter_lies_with_emotions_not_facts.html
How can they get away with this, especially in the fucking science section?
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>>8673198
Because high IQ leads to an unhappy life.
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>slate
It's already ideological as fuck.
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They're not wrong, if you fight lies with facts then what's going to change? Assuming it's just you and the other guy and nobody else is watching, you're both just going to argue over what are actually facts and what are lies. It's better to just come to terms with what you feel is true and leave them alone, otherwise it's just going to deteriorate you.
I didn't actually read the article I'm just ranting.
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time is by very definition linear
prove me wrong
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>>8681773
Time is whatever I want it to be.
Prove me wrong.
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>>8681776
it's the measurements of events from past to present and then future, how exactly can this be represented by anything other than a straight line?
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>>8681782
because time could just be a circle, and a circle is not a straight line. At least, not a continuous straight line
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Thoughts on Wildlife/Animal Conservation? Worth going into?
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>>8681334
just go in there with a skeptical mindset realizing lots of it is just jewish trickery and lies
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>>8681346
Surveying frog populations is Jewish trickery, I'll keep that in mind
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Conservation charities exist only to line the pockets of the people running the charity. Also, almost all budget is spent on worthless shit animals that don't really matter but are cute, like pandas and polar bears. The funding should actually go to animals that are the most important to their ecosystem, but that is not the case.
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If light is an electromagnetic wave, do you think your brain has magnetic properties to attract and store light in your mind as memories.
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>>8681078
Gee OP, you sure are dumb! How'd you get to be so stupid?
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No, memories are stored chemically and physically. There are no physical systems inside the brain for storing light. If you don't believe me go buy a cow brain from a butcher and look for something that stores light
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>>8681081
How can atoms emit light if they dont have light within them
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Has anyone ever studied at all five?
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>>8680859
I did.
Prove me wrong.
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>>8680886
It'd be a huge waste of time.
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>>8680894
For you.