On Mon, 12 Feb 2024 02:13:38 -0800 (PST), asps wrote:
> della gabbia in cui ha messo la PNN su NasaSpaceflight
>---snip---
Toh, qualche giorno fa uno degli utenti ha spiegato come mai ce l'ha tanto
con robe tipo l'EMDrive (o similari):
I follow spaceflight developments on this forum, and have for a long time.
I do not like seeing bad information being posted to a site like this.
There are several forms of harm that happen when people promote
nonsensical claims here:
-It can legitimize scam like devices (a recent thread got removed that was
just a link to someone's propellantless drive website.) It brings them
attention, makes them seem legitimate when it is not answered, and cases
like that can be a for of link farming for Google, Google sees a link from
a good site like this and raises the value of what is probably a scam
website.
<Mhhhh... "un thread recente e' stato rimosso perche' era SOLTANTO un link
a un sito di propulsione senza propellente di un tizio": mi ricorda
qualcuno....>
-People, possibly students could come across this information and get
mistaken ideas about science when people make claims like that gravity is
reactionless, or whatever other justifications they use to work around
conservation laws. (QI related threads usually have multiple outright
false claims about GR in them in particular.)
-While there is some educational benefit from trying to test devices like
this, a significant amount of effort often gets put into irrelevant things
to tune the "magic" parts of the device. I have suggested above testing an
ionocraft as an example of something more productive that could be done
with equivalent effort and resources.
-The book review that was mentioned in this thread is another example of
how harm happens when the criticisms and problems with these devices are
not pointed out. Legitimate, actual money can be sent to people who are
either scammers or doing things that do not in fact advance science.
When done with full acknowledgement and recognition that what is being
tested is fundamentally contrary to countless other experiments, and is
just being done as a fun exercise in hands on work, I don't have a real
problem with it, but that acknowledgement is usually absent. Plus, a lot
of threads here end up with some form of "other people should test my
great idea."
<toh, pure questo non m'e' nuovo!>
There is plenty of legitimate new physics work out there, but
approximately none of what gets posted here is that. I am not defending
"old physics" but defending the basics of science, that things should be
based on actual observations about the world, experiments, and logic
(math). What happens in these threads usually ignores any existing data
and logic that disagree with the desired conclusion, and that is not how
science works. Often there is even a lack of a testable hypothesis.
--
GiOvAnNi