On Fri, 22 Oct 2021 11:13:10 +0200,
nos...@de-ster.demon.nl (J. J.
Lodder) wrote:
>Rich Ulrich <
rich....@comcast.net> wrote:
>
>> On Thu, 21 Oct 2021 21:28:34 +0200,
nos...@de-ster.demon.nl (J. J.
>> Lodder) wrote:
>>
>> >Rich Ulrich <
rich....@comcast.net> wrote:
>> >
>> >>
>> >> What I recall reading, from some philosopher of science,
>> >> is that Newton put off publishing on Gravity for 20 years,
>> >> because he was not sure that it was correct.
>> >
>>
>> Maybe "community" would be a better word for what Einstein
>> had that Newton lacked. Other people were around who were
>> concerned with the speed of light.
>
>Yes, but Einstein didn't work with them.
>He read what they had written, and thought for himself,
>until he could publish.
>But Newton and contemporaries did have a community.
>They wrote a great many letters to each other,
>which was the publication medium of their time.
>(they also copied letters, and passed them on)
Okay, I knew that they passed around letters.
Were they working together to discover truths, or were
they passing around their own, confirmed successes? My
impression is that they worked on their own projects, open
to new ideas, but without much that looks like active collaboration.
In particular -
Did Newton share his ideas about gravity in those letters, at
any time during those 20 years that he had a completed theory
and yet harbored doubts?
>
>> Did Einstein publish "guesses" or open hypotheses? about anything?
>> - I really don't know.
>
>Worse, he -postulated- relativity as the framework for all of physics.
>
>> But there's a lot of physics today that is fully hypothetical, in
>> that sense that the proposer has no strong faith that it has
>> to be the eventual, true description of nature. They give it
>> to the community for wider discussion and development.
>
>So many physicists say that this is no longer physics, really.
>It has an atmosphere of crisis around it,
Hmm. On the one hand, it sounds like Physics-with-humility,
searching for the best models -- best predictions with the
fewest "degrees of freedom" in the explanation. Without
prejudice, without absolutes. Yes, Einstein has seemed to
have had some humility.
On the other hand, a few physicists I have known or read about
might regard "humility" as an indicator of crisis.
--
Rich Ulrich