Problem vs Paradox

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If
1 + 1 = ?
is a problem

and

“This is a lie.”
is a paradox,

a problem often implies
the method—
in this case
addition
—with which to solve
the problem,

while a paradox
does not.

If you mistake
a paradox
for a problem,
the more time you spend
applying the method
you think
will solve the problem,
the more time
you may spend
staying stuck.