EP20: Yann LeCun - part 6/11
December 15, 2025 • 1h 50m 6s
Yann LeCun (Chief AI Scientist)
00:00.310
to
do
pattern
recognition
or
to
do
you
know
natural
language
processing
that
really
only
happened
after
you
know
the
ramelight
hinton
williams
paper
in
nineteen
eighty
five
even
though
people
had
proposed
the
very
same
algorithm
a
few
years
before
like
pope
werbus
you
don't
Yann LeCun (Chief AI Scientist)
00:18.150
propose
you
know
what
he
called
order
derivatives
which
turns
out
to
be
backdrop
but
it's
the
same
thing
as
the
adjoint
state
method
in
optimal
control
so
like
those
are
ideas
i
mean
the
fact
that
an
idea
or
a
technique
is
reinvented
multiple
times
in
different
fields
and
then
Yann LeCun (Chief AI Scientist)
00:30.830
only
after
the
fact
people
say
oh
right
it's
actually
the
same
thing
and
we
knew
about
this
before
we
didn't
realize
we
could
use
this
for
it
for
this
particular
stuff
right
so
all
those
like
claims
of
plagiarism
it's
just
it's
just
a
complete
misunderstanding
of
ideas
? (?)
00:50.440
OK
what
do
you
do
when
you're
not
thinking
about
AI
have
a
whole
bunch
of
hobbies
that
have
very
little
time
to
actually
partake
in
alexei
aline
so
i
go
selling
in
the
summer
i
like
selling
multi
hall
boats
like
tremor
and
catamarans
i
have
a
bunch
of
boats
i
like
building
? (?)
01:23.560
flying
contraptions
so
a
modern
da
vinci
i
wouldn't
i
wouldn't
call
it
airplanes
because
a
lot
of
them
don't
look
like
airplanes
but
they
don't
fry
OK
i
like
the
the
sort
of
you
know
concrete
creative
act
of
that
my
dad
was
aerospace
engineer
and
he
mechanical
engineer
working
? (?)
01:44.950
in
the
aerospace
industry
and
he
was
you
know
building
airplanes
as
a
hobby
and
like
you
know
building
his
own
radio
control
system
and
stuff
like
that
and
he
got
me
and
my
Yann LeCun (Chief AI Scientist)
01:54.550
brother
into
it
my
brother
who
works
at
google
at
google
research
in
france
in
paris
and
and
and
that
became
kind
of
a
family
activity
if
you
want
so
my
brother
and
i
still
still
do
this
but
and
then
in
the
covid
years
i
picked
up
astrophotography
so
i
have
a
bunch
of
telescopes
Yann LeCun (Chief AI Scientist)
02:15.710
and
pictures
of
the
sky
and
i
built
electronics
so
since
i
was
a
teenager
i
was
interested
in
music
i
was
playing
renaissance
and
baroque
music
and
also
some
type
of
folk
music
playing
wind
instruments
wind
winds
and
but
i
was
also
into
electronic
music
and
my
cousin
who
is
such
Yann LeCun (Chief AI Scientist)
02:38.310
older
than
me
was
inspiring
electronic
musician
so
we
had
like
analog
synthesizers
because
i
knew
electronics
i
would
like
you
know
modify
them
for
him
and
i
was
still
in
high
school
at
the
time
and
and
now
in
Yann LeCun (Chief AI Scientist)
02:56.150
my
home
i
have
a
whole
bunch
of
synthesizers
and
i
build
electronic
musical
instruments
so
so
these
are
wind
instruments
you
blow
into
them
you
know
there's
fingering
and
stuff
but
what
they
produce
is
control
signals
for
a
synthesizer
it's
cool
very
cool
i've
heard
a
lot
of
Yann LeCun (Chief AI Scientist)
03:15.440
people
in
tech
are
into
sailing
like
in
yeah
gotten
that
answer
surprising
amount
i'm
going
to
start
trying
to
sail
now
OK
so
i
tell
you
something
about
sailing
it's
very
much
like
the
war
model
story
to
be
able
to
you
know
kind
of
control
this
elbow
properly
to
make
it
go
as
Yann LeCun (Chief AI Scientist)
03:32.870
fast
as
possible
and
everything
you
have
to
anticipate
a
lot
of
things
you
have
to
anticipate
the
motion
of
the
waves
like
how
the
waves
are
going
to
affect
your
boat
you
know
whether
a
gust
of
wind
is
going
to
come
and
have
to
you
know
start
you
know
the
woods
going
to
start
Yann LeCun (Chief AI Scientist)
03:47.110
healing
and
things
like
that
and
you
basically
have
to
run
CFD
in
your
head
because
you
have
to
figure
out
like
the
you
know
through
dynamics
you
have
to
figure
out
like
what
is
the
flow
of
air
around
the
around
the
around
the
sails
and
you
know
that
if
the
angle
of
attack
is
Yann LeCun (Chief AI Scientist)
04:03.910
too
high
it's
going
to
be
turbulent
on
the
back
and
the
the
lift
is
going
to
be
much
lower
so
blah
blah
blah
so
like
you
know
tuning
sales
is
basically
requires
running
cod
in
your
head
but
at
an
abstract
level
you're
not
solving
the
you
know
navier
stokes
right
we
have
really
Yann LeCun (Chief AI Scientist)
04:23.750
good
intuitive
so
that's
what
i
like
about
it
like
the
whole
thing
that
you
have
to
build
this
mental
you
know
predictive
model
of
the
world
to
be
able
to
do
a
good
job
how
many
samples
you
need
? (?)
04:37.560
yeah
probably
a
lot
but
but
you
know
you
get
to
run
it
on
ian
you
know
? (?)
04:43.080
if
you
a
few
years
of
practice
and
yeah
yeah
OK
your
friends
and
you
lived
in
the
US
for
many
? (?)
04:54.680
decades
already
do
you
still
feel
french
derek
? (?)
04:58.080
does
that
perspective
shape
your
view
of
the
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