Recently while debating the official 9/11 story, a person said:

"So if the terrorists didn't do [9/11] as your evidence and laws
of physics say, then what happened to all the people
on the planes? Did they just vanish in thin air?"

As if the lack of an alternative explanation (which
I had not yet stated) implies that the official 9/11 story
is true.

Lacking a story that they felt was emotionally
acceptable i.e. that Muslims perpetrated 9/11,
they were left in a crisis. They wanted to simply
believe the government's fairy story and indeed
had decided what to believe long ago. Or rather
the government & the subservient media did it for them.

Thus they suffered from confirmation bias:
They had made up their minds long ago, and any new
information they simply rejected rather than face
a new emotional crisis. And any new information,
like the occasional 9/11 related story that appears
in the media, served to confirm their original belief.

Hi all

If the following axiom is added to ZF, would the resulting theory be
equivalent to ZFC?

Axiom:

for all x , for all y ((x is dedekindian and y subset of x)

implies y is dedekindian)

in symboles:

(x is dedekindian & y c x) -> y is dedekindian

in words: every subset of a dedekindian set is dedekindian.

Zuhair