EP20: Yann LeCun - part 12/15
December 15, 2025 • 1h 50m 6s
? (?)
00:00.440
OK
what
do
you
do
when
you're
not
thinking
about
AI
Yann LeCun (Chief AI Scientist)
00:07.840
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
flying
contraptions
? (?)
00:35.440
so
a
modern
da
vinci
i
wouldn't
i
Yann LeCun (Chief AI Scientist)
00:39.160
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
in
the
aerospace
industry
and
he
was
you
know
building
Yann LeCun (Chief AI Scientist)
00:58.670
airplanes
as
a
hobby
and
like
you
know
building
his
own
radio
control
system
and
stuff
like
that
and
he
got
me
and
my
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
Yann LeCun (Chief AI Scientist)
01:16.990
and
i
still
still
do
this
but
and
then
in
the
covid
years
i
picked
up
astrophotography
so
i
have
a
bunch
of
telescopes
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
Yann LeCun (Chief AI Scientist)
01:37.510
type
of
folk
music
playing
wind
instruments
wind
winds
and
but
i
was
also
into
electronic
music
and
my
cousin
who
is
such
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
Yann LeCun (Chief AI Scientist)
01:58.430
was
still
in
high
school
at
the
time
and
and
now
in
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
Yann LeCun (Chief AI Scientist)
02:20.190
synthesizer
? (?)
02:21.950
it's
cool
very
cool
i've
heard
? (?)
02:25.040
a
lot
of
people
in
tech
are
into
sailing
like
in
yeah
gotten
that
answer
surprising
amount
i'm
going
to
start
trying
to
sail
now
OK
Yann LeCun (Chief AI Scientist)
02:33.040
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
fast
as
possible
and
everything
you
have
to
anticipate
a
lot
of
things
you
have
to
anticipate
the
motion
of
the
waves
like
Yann LeCun (Chief AI Scientist)
02:49.070
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
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
Yann LeCun (Chief AI Scientist)
03:05.550
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
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
Yann LeCun (Chief AI Scientist)
03:23.350
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
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
Yann LeCun (Chief AI Scientist)
03:40.550
of
the
world
to
be
able
to
do
a
good
? (?)
03:43.390
job
how
many
samples
you
need
Yann LeCun (Chief AI Scientist)
03:47.560
yeah
probably
a
lot
but
but
you
know
you
get
to
run
it
on
ian
you
know
if
you
a
few
years
of
practice
and
yeah
yeah
? (?)
03:59.190
OK
your
friends
and
you
lived
in
the
US
for
many
decades
already
do
you
still
feel
french
derek
does
that
perspective
shape
your
view
of
the
of
the
wall
of
the
american
tech
culture
Yann LeCun (Chief AI Scientist)
04:16.160
well
inevitably
yeah
i
mean
you
you
can't
completely
escape
your
your
upbringing
and
your
culture
so
i
mean
i
feel
both
french
and
american
in
the
sense
that
you
know
i
mean
in
the
US
for
thirty
seven
years
and
in
north
america
for
thirty
eight
because
i
was
in
canada
before
or
Yann LeCun (Chief AI Scientist)
04:37.550
children
grew
up
in
the
US
and
so
from
that
point
of
view
i'm
american
but
i
have
a
view
certainly
on
you
know
on
various
aspects
of
science
and
society
that
probably
are
you
know
a
consequence
of
growing
up
in
france
yeah
absolutely
and
if
you're
french
i
mean
france
? (?)
04:58.680
i'm
curious
i
did
not
actually
realize
that
you
had
a
brother
that
also
worked
in
tech
i'm
fast
fascinated
by
this
because
yahshua
bengio
's
brother
also
works
in
tech
and
i
always
thought
that
he
was
the
only
serena
venus
williams
situation
in
AI
but
you
you
too
also
have
a
? (?)
05:16.230
brother
so
how
many
more
AI
research
like
like
is
it
that
common
that
it
just
runs
in
families