DOCS.
10,
11
MAY 1914
21
probabilities
of
the
system
states
are
evaluated
may
not
itself be made
dependent
on
the
system
state
(4)
otherwise
....
futile.
-o-
To
come as quickly
as
possible
to
the
objective,
I
do
so
in
the
following
theses:
I
define
my
problem
by
complete
elimination of
the
concept
of
G(q,
p,
a), fully
adopting your
diction. And
then
I
draw
up
the
solution
to
your problem using
this
terminology
as
well.
-o-
For
psychological
reasons
I
shall formulate
everything by means
of
a
somewhat
specialized
case.-If
you
understand
me
here, you
will
immediately
figure
out
the
general
idea.
Einstein: The
assumption
of
a G(q, p, a)
is
inadmissible, completely
contrary
to Boltzmann’s
conception
.....
system
assumes
of
its
own
accord
....
etc.
-o-
My problem
and the
solution I have found is
Leyden, 21 May
1914
Do not
reply
to
me
about
this!!!-It
is
better
we
discuss it.- Dear
Einstein,
please
do
not feel
it
presumptuous
of
me
that
I
write
you
again-but
I
am enor-
mously
interested
in these
things. Yours,
Ehrenfest.
11.
To Paul Ehrenfest
[Berlin,
25
May
1914]
Dear Ehrenfest!
You
are
entirely right, you impetuous
boy.
I
had
already
noticed
it
before
your
incensed
letter
arrived.[1] Quantum theory
requires
that the G's
be made
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