Editing Talk:2263: Cicadas

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::Sorry, I only know it from memory, from when I watched about 10 interviews with and talks by him in a day. :D And it was all YouTube recommendations and a few months old, so it's probably not even in my YouTube history anymore. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 22:50, 5 February 2020 (UTC)
 
::Sorry, I only know it from memory, from when I watched about 10 interviews with and talks by him in a day. :D And it was all YouTube recommendations and a few months old, so it's probably not even in my YouTube history anymore. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 22:50, 5 February 2020 (UTC)
  
I think the current explanation is sufficient and complete - I'd even go so far to remove the part about why there is a 17-year cycle since for the understanding of the comic it's totally irrelevant. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 10:48, 4 February 2020 (UTC)
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I think the current explanation is sufficient and complete - I'd even go so far and remove the part about why there is a 17-year cycle since for the understanding of the comic it's totally irrelevant. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 10:48, 4 February 2020 (UTC)
 
:No that is very relevant. It is the reason why 17 seconds was chosen and very likely why Randall thinks these cicadas are so interesting that he ended up doing a comic on them. But I agree with the completeness. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 13:01, 4 February 2020 (UTC)
 
:No that is very relevant. It is the reason why 17 seconds was chosen and very likely why Randall thinks these cicadas are so interesting that he ended up doing a comic on them. But I agree with the completeness. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 13:01, 4 February 2020 (UTC)
 
:: If it was 12 years instead it would be 12 seconds in the comic. Being prime or not doesn't matter at all neither for the comic nor the explanation. It's trivia at best. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 14:04, 4 February 2020 (UTC)
 
:: If it was 12 years instead it would be 12 seconds in the comic. Being prime or not doesn't matter at all neither for the comic nor the explanation. It's trivia at best. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 14:04, 4 February 2020 (UTC)
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::: (reduced the indenting) The process of evolution is that benefits happen '''not for any ultimate purpose''' but are randomly selected by environmental circumstances. If cicadas randomly reproduce on 1 or 2 or 3 or 5 or multiples of those numbers then it is more likely that their predators will be able to match that cycle and it will be less effective. So if the random changes in their maturity cycles happen to hit upon 13 or 17 then it is less likely that the predators will match that cycle. Therefore it becomes a more successful reproductive method and that's how it happens. The prime number is not a '''reason or cause''' of the 17 year cycle. It is a consequence that this particular random change in cycle provides ('''after the fact''') a better survival chance than any other cycle. This is an important distinction in understanding evolution. [[User:Rtanenbaum|Rtanenbaum]] ([[User talk:Rtanenbaum|talk]]) 20:20, 5 February 2020 (UTC)
 
::: (reduced the indenting) The process of evolution is that benefits happen '''not for any ultimate purpose''' but are randomly selected by environmental circumstances. If cicadas randomly reproduce on 1 or 2 or 3 or 5 or multiples of those numbers then it is more likely that their predators will be able to match that cycle and it will be less effective. So if the random changes in their maturity cycles happen to hit upon 13 or 17 then it is less likely that the predators will match that cycle. Therefore it becomes a more successful reproductive method and that's how it happens. The prime number is not a '''reason or cause''' of the 17 year cycle. It is a consequence that this particular random change in cycle provides ('''after the fact''') a better survival chance than any other cycle. This is an important distinction in understanding evolution. [[User:Rtanenbaum|Rtanenbaum]] ([[User talk:Rtanenbaum|talk]]) 20:20, 5 February 2020 (UTC)
 
::: (Yeah, sorry, +1 on indent aain.) Indeed, it's difficult to use the right language to get that point across, though. In my Trivia edit I put in the word "happenstance" at one point. An awkward word, but trying to make that point. Ditto demonstrating why 16 years is 'worse' (while mentioning just one reason why, e.g., 2<sup>82,589,933</sup>−1 would be an impractical choice of Prime, too!).  So DNA/etc that ''just happens to'' produce an effective counter-to-N (of external cues indicating another year has passed) before provoking a given stage of life transition is better when that N is 17 (or 13), and other Ns are less advantageous. They may well have arisen, but died out. (As did the 13-year Brood-21, IIRC, for whatever reason, maybe anthropogenic, at the end of the 19<sup>th</sup>C.)  Not that we're entirely sure why 'better' (I would firmly side with it being likely related to predator and/or resource-competitor avoidance, with self-reinforcing temporal divergence from their relatives that chose a different frequency and/or offset, but there could be other advantages not observed), and the cicadas probably don't know or properly appreciate what {{w|Dayworld_(novel_series)|they're doing}}. Their ancestors definitely did not go "Hey, chaps, I've got a ''brilliant'' plan...", just before one of their kind decided to make his inaugural multi-year nap. But something happened, and a fascinating emergent behaviour resulted. Don't you just love the Universe, sometimes? [[Special:Contributions/141.101.98.118|141.101.98.118]] 22:56, 5 February 2020 (UTC)
 
::: (Yeah, sorry, +1 on indent aain.) Indeed, it's difficult to use the right language to get that point across, though. In my Trivia edit I put in the word "happenstance" at one point. An awkward word, but trying to make that point. Ditto demonstrating why 16 years is 'worse' (while mentioning just one reason why, e.g., 2<sup>82,589,933</sup>−1 would be an impractical choice of Prime, too!).  So DNA/etc that ''just happens to'' produce an effective counter-to-N (of external cues indicating another year has passed) before provoking a given stage of life transition is better when that N is 17 (or 13), and other Ns are less advantageous. They may well have arisen, but died out. (As did the 13-year Brood-21, IIRC, for whatever reason, maybe anthropogenic, at the end of the 19<sup>th</sup>C.)  Not that we're entirely sure why 'better' (I would firmly side with it being likely related to predator and/or resource-competitor avoidance, with self-reinforcing temporal divergence from their relatives that chose a different frequency and/or offset, but there could be other advantages not observed), and the cicadas probably don't know or properly appreciate what {{w|Dayworld_(novel_series)|they're doing}}. Their ancestors definitely did not go "Hey, chaps, I've got a ''brilliant'' plan...", just before one of their kind decided to make his inaugural multi-year nap. But something happened, and a fascinating emergent behaviour resulted. Don't you just love the Universe, sometimes? [[Special:Contributions/141.101.98.118|141.101.98.118]] 22:56, 5 February 2020 (UTC)
::::The intendation gets pretty confusing with my reply below for a comment far above. Anyway, are you sure that 2⁸²⁵⁸⁹⁹³³-1 is a prime number? :D I couldn't even get an online "big number calculator" to just print out the number for me, especially not check for being prime. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 23:06, 5 February 2020 (UTC)
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:::::It actually is the {{w|Largest known prime number}} as of January 2020. It was discovered (according to the linked wiki article) in December 2018. --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 07:40, 6 February 2020 (UTC)
 
  
 
:Why did you make an edit to replace "go so far to remove" with "go so far and remove"? [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 18:47, 5 February 2020 (UTC)
 
:Why did you make an edit to replace "go so far to remove" with "go so far and remove"? [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 18:47, 5 February 2020 (UTC)
::Because I'm a dumb German and "to" just sounds wrong in my head ;) Reverted it again, thanks :) [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 09:13, 6 February 2020 (UTC)
 
:::The correct phrase you want is "go so far as to remove". :) You were missing the word "as". The phrase "go so far as" is very common. [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:27, 16 February 2020 (UTC)
 
 
I used to listen to, a lot to R.E.M.'s 'Daysleeper' where they mention 'circadian rhytm' (at the end of the first verse) - that line I always overheard as 'cicadian rhytm' (the 'r' is disappearing)... wonder if this has something to do with the pun too? Or coincidence? [[Special:Contributions/162.158.154.121|162.158.154.121]] 13:47, 18 February 2020 (UTC)
 

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