Difficult Concepts (for me)
- chasmanian
- Articles: 0
- Posts: 439
- Joined: Sat May 11, 2019 1:06 am
- 4
- Location: USA
- Status:
Offline
Re: Difficult Concepts (for me)
wow, awesome.
"Whether space NOW 13+ billion years after is infinite is testable assuming GR and the CMB observations. Given those assumptions and observations the odds are 2:1 that space is infinite. By reducing observational error one can get more definite about the test result."
hmmmmm
the sky's the limit? hahahaha
nFA, if you feel like it,
would you please elaborate on reducing observational error?
is it possible or likely?
how would it be accomplished?
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Difficult Concepts (for me)
There are two main approaches to reducing the observational errors.chasmanian wrote: ↑Sat Aug 21, 2021 2:24 am "What is testable is GR. Without a quantum gravity we have a well tested theory that is only testable back to a Planck time after a Big Bang or Big Crunch."
wow, awesome.
"Whether space NOW 13+ billion years after is infinite is testable assuming GR and the CMB observations. Given those assumptions and observations the odds are 2:1 that space is infinite. By reducing observational error one can get more definite about the test result."
hmmmmm
the sky's the limit? hahahaha
nFA, if you feel like it,
would you please elaborate on reducing observational error?
is it possible or likely?
how would it be accomplished?
First and most straight forward is simply the improvement of the technology of CMB observations. It’s going to happen in some decades.
The second one is to find connections between the parameters that can be determined from the CMB and other methods as well. This might happen sooner than decades. For instance the texture of the CMB fluctuations should be relatable to the texture of the mass fluctuations observable at later times by the JWST. This would provide more leverage to the problem than just beating current errors down with better technology.
- chasmanian
- Articles: 0
- Posts: 439
- Joined: Sat May 11, 2019 1:06 am
- 4
- Location: USA
- Status:
Offline
- chasmanian
- Articles: 0
- Posts: 439
- Joined: Sat May 11, 2019 1:06 am
- 4
- Location: USA
- Status:
Offline
Re: Difficult Concepts (for me)
as for the infinity in singularities,
I am thinking that both actual and potential infinity proponents,
would see that as neither actual nor potential.
it just tells us that GR does not work there.
is that right?
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Difficult Concepts (for me)
Indeed it says that GR fails at singularities.chasmanian wrote: ↑Sun Aug 22, 2021 2:56 pm nFA,
as for the infinity in singularities,
I am thinking that both actual and potential infinity proponents,
would see that as neither actual nor potential.
it just tells us that GR does not work there.
is that right?
- chasmanian
- Articles: 0
- Posts: 439
- Joined: Sat May 11, 2019 1:06 am
- 4
- Location: USA
- Status:
Offline
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute