language, nature, nurture · the yin of learning; the yang of innateness grammar (what is and...

57
Language, Nature, Nurture Part I: Language in Space and Time Simon D. Levy PHIL 205 05 November 2007

Upload: others

Post on 11-Aug-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language, Nature, Nurture

Part I: Language in Space and Time

Simon D. LevyPHIL 205

05 November 2007

Page 2: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language is a virus from outer space.

- William S. Burroughs (attributed)

Page 3: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Format• Overview: Language in Space & Time• The Story to ~1960• Chomsky vs. Skinner• The Yin of Learning / The Yang of Innateness• Generative Grammar• Three Possibilities for the Evolution of

Language

Page 4: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Space: I

http://www.zompist.com/nonielng.gif

Page 5: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Space: I

Page 6: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Space: I

• Location, location, location: whatlanguage you learn depends on whereyou’re born

• No relationship between your genes andwhat language you learn (?)

Page 7: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Space: II

http://www.fmrib.ox.ac.uk

Page 8: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Time: I

Hwæt! We Gardena  in geardagum, þeodcyninga, þrym gefrunon, hu ða æþelingas ellen fremedon. Oft Scyld Scefing sceaþena þreatum, monegum mægþum,  meodosetla ofteah, egsode eorlas. Syððan ærest wearð feasceaft funden, he þæs frofre gebad, weox under wolcnum, weorðmyndum þah, oðþæt him æghwylc þara ymbsittendra ofer hronrade hyran scolde, gomban gyldan.þæt wæs god cyning!

http://www.georgetown.edu/labyrinth/library/oe/texts/a4.1.html

0 2000 AD900

Page 9: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Time: I

Whan that Aprille with his shoores sooteThe drought of March hath perced to the rooteAnd bathed every vein in swich liquorOf which vertu engendred is the flourWhen Zephyrus eek with his sweete breethInspired hath in every holt and heethThe tendre croppes and the yonge sunHath in the ram his halve cours yronneAnd smale fowles maken melodyeThat slepen all the night with open eyeSo priketh hem nature in hir courages

http://www.mshogue.com/AP/whan_that_aprille.htm

0 2000 AD1400

Page 10: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Time: ITo be or not to be, that is the question—Whether 'tis nobler in the mind to sufferThe slings and arrows of outrageous fortune,Or to take arms against a sea of troubles,And by opposing, end them. To die, to sleep—No more; and by a sleep to say we endThe heart-ache and the thousand natural shocksThat flesh is heir to — 'tis a consummationDevoutly to be wish'd. To die, to sleep—To sleep, perchance to dream. Ay, there's the rub,For in that sleep of death what dreams may come,When we have shuffled off this mortal coil,Must give us pause.

http://en.wikipedia.org/wiki/To_be,_or_not_to_be

0 2000 AD1600

Page 11: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Time: II(Want) tride!

0 3 yr1

Please I can go on (the) slide?

0 3 yr2

Please can I go on the slide?

0 3 yr2.5

Page 12: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Language in Time : III

Page 13: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960

Page 14: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~19601600-1900: Empiricists vs. Rationalists

http://en.wikipedia.org/wiki/John_Locke http://en.wikipedia.org/wiki/Descartes

Page 15: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~19601900-1960: Behaviorism Rising

http://en.wikipedia.org/wiki/Ivan_Pavlov http://www.marxists.org/reference/subject/philosophy/works/us/watson.htm http://williamcalvin.com/bk9/img/hebb.jpg

Page 16: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960Hebbian Learning

When an axon of cell A is near enough to excite cell Band repeatedly or persistently takes part in firing it,some growth process or metabolic change takes place inone or both cells such that A's efficiency, as one of thecells firing B, is increased.

­ D.O. Hebb, The Organization of Behavior (1949)

“Fire together, wire together."

Page 17: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960Hebbian Learning

When an axon of cell A is near enough to excite cell Band repeatedly or persistently takes part in firing it,some growth process or metabolic change takes place inone or both cells such that A's efficiency, as one of thecells firing B, is increased.

­ D.O. Hebb, The Organization of Behavior (1949)

“Fire together, wire together."

+ +

Page 18: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960Hebbian Learning

When an axon of cell A is near enough to excite cell Band repeatedly or persistently takes part in firing it,some growth process or metabolic change takes place inone or both cells such that A's efficiency, as one of thecells firing B, is increased.

­ D.O. Hebb, The Organization of Behavior (1949)

“Fire together, wire together."

- -

Page 19: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960Hebbian Learning

When an axon of cell A is near enough to excite cell Band repeatedly or persistently takes part in firing it,some growth process or metabolic change takes place inone or both cells such that A's efficiency, as one of thecells firing B, is increased.

­ D.O. Hebb, The Organization of Behavior (1949)

“Fire together, wire together."

+ -

Page 20: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960Hebbian Learning

When an axon of cell A is near enough to excite cell Band repeatedly or persistently takes part in firing it,some growth process or metabolic change takes place inone or both cells such that A's efficiency, as one of thecells firing B, is increased.

­ D.O. Hebb, The Organization of Behavior (1949)

“Fire together, wire together."

- +

Page 21: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Story to ~1960State/Transition Models

Please

can

leave

I

we

0.6

0.4

0.5

0.2

0.9

0.80.5

go . . .

Page 22: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner

Page 23: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)

http://www.faqs.org/health/images/uchr_05_img0542.jpghttp://192.211.16.13/curricular/nchomsky/chomsky6.gif

Page 24: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)

From this sample, it can be seenthat the notion ofreinforcement has totally lostwhatever objective meaning itmay ever have had.

Page 25: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)

It seems that Skinner’s claimthat all verbal behavior isacquired and maintained in“strength” throughreinforcement is quite empty ....

Page 26: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)Similarly, it seems quite beyondquestion that children acquire a gooddeal of their verbal and nonverbalbehavior by casual observation andimitation of adults and otherchildren. It is simply not true thatchildren can learn language onlythrough “meticulous care” on thepart of adults who shape theirverbal repertoire throughdifferential reinforcement....

Page 27: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)

It is also perfectly obviousthat, at a later stage, a childwill be able to construct andunderstand utterances whichare quite new, and are, at thesame time, acceptablesentences in his language.

Page 28: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Chomsky vs. Skinner (1959)

It would appear to follow fromthis description that a speakerwill not respond properly to the[command] Your money or yourlife unless he has a past historyof being killed.

Page 29: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning;The Yang ofInnateness

Page 30: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

Our “knowledge” of what is and isn’t partof our language goes beyond themeanings of words and sentences:

Colorless green ideas sleep furiously.

Ideas colorless sleep furiously green.

Page 31: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

The “surface” form of a sentence isn’talways a good clue to its meaning:

John is eager to please.

John is easy to please.

Page 32: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

Grammar (what is and isn’t acceptable) containsmysterious gaps that are hard to motivatethrough general theories of mind, meaning,communication, learning, etc:

(1) I saw Bill with Mary yesterday.(2) You saw WHO with Mary yesterday?!(3) Who did you see with Mary yesterday?(4) I saw Bill and Mary yesterday.(5) You saw WHO and Mary yesterday?!(6) Who did you see and Mary yesterday?

Page 33: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

Grammar supports “dependencies” betweenitems separated by arbitrarily long amountsof intervening material, makingstate/transition models inadequate:

That guy likes you.

Page 34: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

That guy likes you.

Page 35: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

That guy you ran into last night likesyou.

Page 36: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

That guy you ran into last night at FDlikes you.

Page 37: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

That guy you ran into last night at FDwith the girl from Mary Baldwin likesyou.

Page 38: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Yin of Learning; The Yang ofInnateness

That guy you ran into last night at FDwith the girl from Mary Baldwin that noone can stand likes you.

Page 39: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

GenerativeGrammar

Page 40: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Generative*Grammar

*i.e., explicit

Page 41: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Basic Hack

That guy you ran into last night at FD with the girl from Mary Baldwin that no one can stand likes you.

Page 42: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

Page 43: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

Page 44: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Page 45: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N

Page 46: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N V NP

Page 47: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N V NP

that

Page 48: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N V NP

that guy

Page 49: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N V NP

that guy likes

Page 50: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Words ‘n Rules

S → NP VP

NP → Det N

NP → I, you, …

VP → V NP

Det → the, a, that

V → saw, likes

N → guy, girl, party, …

S

NP VP

Det N V NP

that guy likes you

Page 51: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

The Magic of RecursionS → NP VP

NP → NP S

NP → who

S

NP

VP

Det N

V NP

that guy likes you

NP

who

VP

V NP

saw you

S

NP

Page 52: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

TransformationsS

NP VP

Det N V NP

that guy likes you

Page 53: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

TransformationsS

NP VP

Det N V NP

that guy likes you S

VP

AUX

are

NP

Det N

that guy

NP

you

V

liked

PP

P

by

Page 54: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Constraints on Transformations:Universal Grammar

S

NP VP

V NP

saw

NP

you

NP → NP and NP

and

NP

Mary who

Page 55: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Constraints on Transformations:Universal Grammar

S

NP VP

V NP

saw

NP

you

NP → NP and NP

and

NP

Mary who

Page 56: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

GG Today• Transformations abandoned for various reasons; e.g.,

• The cow kicked the bucket.• The bucket was kicked by the cow.

• No grammar for even a non-trivial fragment of anylanguage

• Minimalism: the only rule is MERGE (recursion; “put stufftogether and repeat”)

• Construction Grammar is a promising new alternative• Kick the bucket• Dance the night away (Dream your life away, V NP away)

Page 57: Language, Nature, Nurture · The Yin of Learning; The Yang of Innateness Grammar (what is and isn’t acceptable) contains mysterious gaps that are hard to motivate through general

Three Possibilities for theEvolution of Language

• Not adapted for communication ofmeaning

• Adapted for communication of meaning,via natural selection

• Adapted for communication of meaning,via …