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Zeno's paradox
noun
(philosophy)
Any
of
a
set
of
philosophical
problems
generally
thought
to
have
been
devised
by
the
Greek
philosopher
Zeno
of
Elea
(c.
490–430
BC)
to
support
Parmenides'
doctrine
that,
contrary
to
the
evidence
of
one's
senses,
the
belief
in
plurality
and
change
is
mistaken,
and
in
particular
that
motion
is
nothing
but
an
illusion.
Benardete's paradox
name
(philosophy)
A
philosophical
problem
whereby
a
man
intends
to
walk
a
mile
from
a
particular
point,
but
an
infinity
of
gods
separately
plan
to
obstruct
him.
One
of
them
will
raise
a
barrier
to
stop
his
further
advance
if
he
reaches
the
half-mile
point,
a
second
if
he
reaches
the
quarter-mile
point,
a
third
if
he
goes
one-eighth
of
a
mile,
and
so
on
ad
infinitum.
The
paradox
involves
the
fact
that
(i)
the
man
cannot
begin
walking,
because
a
barrier
will
stop
him
even
at
the
shortest
distance,
but
(ii)
if
he
does
not
begin
walking,
no
barrier
will
rise.
Ehrenfest paradox
name
(physics)
A
relativistic
paradox
concerning
the
concept
of
Born
rigidity
within
special
relativity,
where
an
ideally
rigid
cylinder
that
is
made
to
rotate
about
its
axis
of
symmetry.
The
radius
R
as
seen
in
the
laboratory
frame
is
always
perpendicular
to
its
motion
and
should
therefore
be
equal
to
its
value
R₀
when
stationary.
However,
the
circumference
should
appear
Lorentz-contracted
to
a
smaller
value
than
at
rest.
This
leads
to
the
contradiction
that
R
=
R₀
and
R
<
R₀.
Ellsberg paradox
name
Allais paradox
name
Gibson's paradox
name
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