The channel is definitely not targeted for the lay person.
A counter example, Derek from Veritasium, he did a phd in physics education and it shows. Some of his videos are complex in content, but dumbed down so most people can understand.
I enjoy PBS space time and listening to Matt O’Dowd, but I understand at the most 20-40% of what is covered on the videos. It is frustrating because I like the topics being discussed.
I'm not convinced. When he talks about things I understand, he does so in a way that I still find frustratingly convoluted. In these cases, it's not for a lack of education. It probably just means that this style of presenting topics just isn't for me, which is completely fine. Diversity in free education is great and commendable.
But I think you touch on the part that I think is the reason why. Because PBS tries to dumb things down, but instead of doing it like Derek does, which adds clarity, PBS does it by "mystifying" it. Probably tickles someone's itch, but I find it annoying.
Take the video posted, for example. It starts out immediately with thumbnail "Life = Multiverse?". If it really was for the niche audience, that title is remarkably dumb, although understandable for the same reasons clickbait titles work. Perhaps PBS meant to present the question whether one leads to or suggests the other? "Life ⇝ Multiverse?" would better express that. Though, the thought process of how multiverse and the anthropic principle go together is: "Multiverse ⇝ Life?".
The video starts out by expressing three statements, related to the Anthropic Principle (https://en.wikipedia.org/wiki/Anthropic_principle). Had they instead worded those statements as to be correct, it would be a very nice way of introducing the topic.
This is how it is presented:
"Life exists in our universe" ⇝ "Our universe is capable of producing and sustaining life". Which is fine. We understand what producing and sustaining life is, because it is really just the first statement with some added anthropomorphism.
The next one, which is the whole point of the "hook" for the video, and is probably intended to be a little bit cheeky, except that he keeps a straight face, so, unless you know enough, it'll probably just misinform you.
"Okay. Let's try one final uncontroversial statement. Therefore, there are countless universes".
Well, no. Multiverse theory is one way to explain the unlikeliness of the physical constants working out the way they "conveniently" do in our universe. But this logical inference is not an "uncontroversial statement". It doesn't qualify, yet it is dumbed down to suggest it does. I'm sure that the following "Hm", and look to the side, is meant to express this. What do I know. But I'm not particularly amused or impressed.
So, so far, we've seen the thumbnail, and the first three sentences before the intro video rolls. And, it's been 1. Inaccurate information in thumbnail, 2. incorrect logical inference 3. false conclusion.
I can probably continue the video, but this is why I dislike PBS so much. It doesn't really try to dumb things down. It just IMO, fails to communicate science well.
I believe you're in error with the assumption that "there are countless universes" means multiverse in his description. It means that there are countless universe possibilities we can imagine, one for each permutation of the universal constants. Other than a small subset of them, one of which we exist in, nearly all of them would not be able to contain life because they wouldn't have conditions to do so. It doesn't imply that these other universes exist in some "physical" sense, only conceptual.
Yeah, your confusion there is like being confused from the use of a literary device. The intent was exactly to illustrate why the implication 'life -> multiverse' may be problematic.
It was communicated just fine, I think you should continue watching?
Are you sure you got the argument I'm presenting? You did quickly make an edit to avoid a rather rude remark.
My point is that their use of literary devices, as you put it, are often misleading if not flat out wrong. The listener needs to he able identify them as such, and I don't think that's a good way to communicate science.
It doesn't mean that PBS is bad. Note that I have made no such statement. I'm just saying that I dislike it, and tried to be constructive as to why. If this offended you, like your initial remark might suggest, perhaps you are reading too much into it.
I did want to avoid implying that videos are harder to understand if you find nonverbal cues hard to understand, but sure. That would genuinely be a reason to avoid PBS videos and that's fine.
The point is their use of the literary device here was not misleading nor 'flat wrong'. It is serving as a jumping off point from the video title 'Does Life Need a Multiverse to Exist?'. You may argue that such a question is ill posed, but then state your argument properly.
Read: they are NOT talking about the anthropic principle here. You are probably confused because you are trying to shoehorn this into discussion when the video is not even talking about this yet. Yes the anthropic principle is cogent to the video but not until later.
The difference in opinion is that I don't consider literary devices to validate incorrect or misleading statements. Which is why I dislike PBS. You do, and that's fine. To each their own.
> Read: they are NOT talking about the anthropic principle here. You are probably confused because you are trying to shoehorn this into discussion when the video is not even talking about this yet. Yes the anthropic principle is cogent to the video but not until later.
You are not only confused because they are using a literary device, you are _primarily_ confused because you think they are talking about the anthropic principle, when they are not.
Anyways. I am sure you have your reasons for disliking PBS. Just that the reason you've given here is incoherent, for reasons I understand (trying to make a point quickly etc). No worries.
You seem very hung up on my incorrect assumption as to what extent the video was about the anthropic principle or not. I have not watched it, nor do I intend to, and I am happy with being wrong about it. That said, it also isn't relevant to my dislike of PBS, or arguments presented. I just happened to click and take a peek at this particular video, to see if I could pinpoint the kind of stuff that I have come to associate with them. I didn't need to watch very long to find examples. Examples, that you can take at face value, in it's own isolated context, which makes it completely irrelevant what you are hung up on, and suggesting I am confused by.
So, I'll make it simple.
"LIFE = MULTIVERSE?", is... a very dumb statement. It can function as a clickbait, but I'm assuming that PBS wants to suggest a relationship of inference. Why start out with possibly giving someone a wrong idea/concept? Now, this isn't a big deal. I just took a peek, and the first thing I saw was rather dumb. So, that's what I'll mention.
Secondly is the sequence of statements, that are explicitly stated as "uncontroversial" in the inference between them.
They are:
"Life exists in our universe" ⇝ "Our universe is capable of producing and sustaining life" ⇝ "there are countless universes".
I'm taking these at face value. Third inference is invalid for more than one reason. Yet, it is presented as nothing but. You consider that OK. I can only think of two possible explanations for why: 1. You consider it OK to be incorrect and misleading when it is used as a literary device. 2. You do not understand why it is an invalid inference.
Either is fine by me. However, I'm not really confused. This... isn't very confusing. The only thing I've stated as a personal opinion here, is that I dislike PBS for being misleading and incorrect, as a literary device. You suggested that they weren't being misleading or incorrect, because there is a "hint hint, nudge nudge" that it might be ironic. So, my person opinion is: well, that's pretty fucking annoying. Hence my conclusion. Which is why I'll just stick to Derek and the likes who can manage to dumb things down to my level. Everyone is happy.
PS: .. and in case you might argue this; it also doesn't matter what they explain later on, if that's why you mentioned I should watch on. There is no "uncontroversial" series of arguments that will reach the logical conclusion "there are countless universes". It's just one of several ways to reason about why life, and the laws of physics, happen to allow something otherwise improbable. Which is what I'm assuming they will get to, but again, I have no intentions of watching it.
> This is the title of the video: Does Life Need a Multiverse to Exist?
> Stew on that.
I'm starting to get the impression that you don't really follow my arguments.
> > There is no "uncontroversial" series of arguments that will reach the logical conclusion "there are countless universes"
> Oh but there is. That's the point of the video. The arguments are laid bare if you care.
Yeah, I skimmed the video now. It's all related to the anthropic principle. Also, nothing is particularly complicated, and, it's exactly what I expected it to be. Hence my previous stated assumption "... is one way to explain the unlikeliness of the physical constants working out the way they "conveniently" do in our universe". I think I could get a a 10 year old to fully understand the fundamental concepts here, though certainly not by having them watch the video.
At 12:47 he states:
"The strong anthropic principle seems to make sense of the incredible fine tuning of our own universe. [Pause for effect] But does that fine tuning actually predict the multiverse? Well, this is a highly controversial point".
So, I suppose it's nice that you made me watch a bit more. Turns out I was right about what you convinced me I was wrong about (It's all tied to the anthropic principle, which includes details on the physical constants I referred to, and how the multiverse is a way to speculate as to why), and it also turns out PBS explicitly agrees with my objection. You know, the one about the initially stated inference being "totally uncontroversial". Telling me to watch the video to find out why, where they say the inference is controversial..... nice. But I have to ask then, did you watch it? That said, I did expect PBS to actually understand the topic. So it wasn't all that surprising that they would contradict the initial statement. After all, it was just a "literary device".
Have a great day.
PS: Regarding, "If only you'll watch the video to understand why it might in fact be a valid inference!". It's either a valid inference, or it isn't. (My point: It isn't, so it shouldn't be presented as if it is)
PPS: PBS is alright. It isn't for me, as it annoys me more often than not. I don't expect everyone to agree, nor is that my goal or desire. Heck, if PBS comes across this and thinks there are any take-aways, maybe that's all worth while. If nothing else, I do genuinely wish for you to have a nice day.
For shits and giggles, I pasted this prompt into ChatGPT4: "Related to the anthropic principle, here are three statements, and a suggested inference between then. Can you point out any issues? They are all states as being totally uncontroversial: "Life exists in our universe" ⇝ "Our universe is capable of producing and sustaining life" ⇝ "there are countless universes"."
--- ChatGPT response start ---
""""
The three statements you've presented related to the anthropic principle and the suggested inference between them touch upon a range of complex issues in the philosophy of science, cosmology, and metaphysics. Here's a breakdown and analysis of each statement and the potential issues with the inference:
"Life exists in our universe" - This statement is indeed uncontroversial and supported by empirical evidence. We have direct evidence of life on Earth, and current scientific endeavors are exploring the possibility of life elsewhere in our universe.
"Our universe is capable of producing and sustaining life" - This follows logically from the first statement. Since life exists in our universe, it is a direct observation that our universe has the necessary conditions to produce and sustain life, at least in some regions like Earth.
"There are countless universes" (Multiverse Theory) - The leap to this statement from the previous ones introduces several controversial aspects:
- Lack of Direct Evidence: There is currently no direct empirical evidence for the existence of other universes, making this a speculative hypothesis rather than a well-established scientific theory.
- Inference from Fine-Tuning: The argument often used to support the multiverse concept is based on the fine-tuning of the constants and laws of physics that make life possible in our universe. The reasoning is that if there are countless universes, each with potentially different physical constants and laws, it wouldn't be surprising that at least one of them (ours) has the right conditions for life. However, this inference is a significant leap from the observational statements preceding it and rests on speculative physics and philosophical arguments rather than direct observation.
- Philosophical and Scientific Controversies: The multiverse hypothesis raises numerous philosophical questions about the nature of reality, the definition of a universe, and the limits of scientific knowledge. It also challenges the principle of parsimony or Occam's Razor, which suggests preferring simpler theories until more complex ones are necessitated by evidence.
Issues with the Inference:
Non-Sequitur: The inference from the universe being life-sustaining to the existence of countless universes is a non-sequitur, meaning it does not logically follow from the previous statements. While the first two statements are grounded in observation, the leap to a multiverse requires additional assumptions not contained within the observational evidence.
Speculative Nature: The multiverse hypothesis, while a fascinating area of theoretical physics and cosmology, remains highly speculative and beyond the current reach of empirical verification.
Philosophical Implications: The argument touches on deep philosophical issues about the nature of existence and our ability to understand the universe. It also involves the anthropic principle, which has various formulations that can lead to different conclusions about the nature of the universe and the significance of human life within it.
In summary, while the first two statements are uncontroversial and empirically supported, the inference to the existence of countless universes introduces speculative elements that are not directly supported by the evidence cited.
"""
--- ChatGPT response end ---
Nice that ChatGPT and I seem to agree. Apologies for the formatting mess.
Here is a suggestion:
"Life exists in our universe" ⇝ "Our universe is capable of producing and sustaining life" ⇝ "The fundamental laws and constants of our universe are finely tuned to allow the existence of life" (aka the anthropic principle).
And then something like... "This fine-tuning can lead us to speculate that our universe might be just one of many, each with different laws and constants, in a vast multiverse". Or something along those lines.
> But it may be a valid inference. No one knows, that's the point.
... well, if you were offended by me linking the scientific method... it's because it might bridge the gap in why you think "that's the point".
It seem to me that, after all this, you still fail to understand the argument I've presented. I've made a lot of effort, in good faith, in trying to figure out why, and address it. The argument is also remarkably simple, as is the examples given. The argument wasn't so much physics, as didactics. But we got stuck on the physics part, because we don't share the same understanding of what logical inference requires. Hence... the aforementioned suggestion.
But, it has reached the point of just being silly. One can only lead the horse to the water. Doesn't seem productive to carry on with the spoon feeding.
Oh the irony. The entire point of the video is to explore the other side of the argument. Pointing out the scientific method here only demonstrates your confusion.
It is exactly a problem with didacts with you. I'm sorry you are completely lost when literary devices are used.
And if you still don't see how this may be a valid inference, take it to PBS for even posing it as a possible question to investigate then. I'm sure you'd jump at the chance to tell them they actually don't understand the scientific method. Funny stuff, if it weren't so sad.
You.. still don't address the topic. Which leaves me to conclude you are not actually interesting in discussing the same thing. My point is that I do not like when literary devices are used the way PBS uses it. Your counter-points do not make any sense, because it is based on the invalid premise that I do not understand it.
So, what's the point of this? I was explaining things for your sake. You do not seem to care for it. So, just leave it be then?
A counter example, Derek from Veritasium, he did a phd in physics education and it shows. Some of his videos are complex in content, but dumbed down so most people can understand.
I enjoy PBS space time and listening to Matt O’Dowd, but I understand at the most 20-40% of what is covered on the videos. It is frustrating because I like the topics being discussed.