But that's because a great number of people claim that blue
jeans are green. And furthermore, they want other people to accept
that the blue jeans are green. And even though the jeans are
actually green, they want others to respect their belief that the
green jeans are blue.
Now if those people would only keep that belief to themselves,
there would be no need to disprove it.
Let's take another example. There is a bunch of people who believe
that the moon landings were faked. They have all kinds of evidence
for it. When people try to explain to them why their evidence is
wrong, they accuse those people of being part of the conspiracy to
fake the moon landings. The number of people who believe this is
actually very small so not much effort is put into debunking their
claims. A couple of astronomers have made the effort to carefully
debunk all the claims, but overall, not much attention is paid to
them because they don't do much harm.
However, let's say if millions of people believed this,
considerably more effort would be put into explaining why the moon
landings really did occur.
