When we
were discussing syntax in class, I was sure we would touch on the sentence
“Colorless green ideas sleep furiously” since it is the classic sentence used
to talk about English syntax, so common that it is very cliché. The sentence
shows that English syntax rules can be very misleading, a fact that was
explored in Noam Chomsky’s popular 1957 book, Syntactic Structures. Chomsky used “Colorless green ideas sleep
furiously” to show that even sentences with correct “logical form” can be
nonsensical.
Many people
have tried, and successfully found ways to use this sentence in a way that
makes sense.
However,
Most “acceptable” uses of this sentence are in poems, for example,
“It can only be the thought of
verdure to come, which prompts us in the autumn to buy these dormant white
lumps of vegetable matter covered by a brown papery skin, and lovingly to plant
them and care for them. It is a marvel to me that under this cover they are
laboring unseen at such a rate within to give us the sudden awesome beauty of
spring flowering bulbs. While winter reigns the earth reposes but these
colorless green ideas sleep furiously.”
The impact
of this sentence was so large because Chomsky “challenged the popular concept
of structuralism” by showing and arguing that linguists should study native
speakers’ unconscious understanding of language, and not the syntax or the
language they produce. I found a lot of differing opinions on whether the Chomsky
sentence is really meaningless. In fact,
many philosophers say that the sentence is simple to understand—they argue that
the sentence is not just meaningful but also true. They interpret Chomsky’s
sentence as saying that every idea that is both colorless and green and does a
certain thing: sleep in a furious way.
That is, any and every colorless green idea sleeps furiously. They interpret this as: if something is a colorless green idea, then it sleeps furiously.
So, in order for the sentence to be false
There would need to be a counterexample—they believe that the only way his
sentence is false is if there is a colorless green idea that does not sleep furiously. Philosophers use
this argument to show that even nonsensical, but syntactically sound sentences
can be “true.”
The overarching
importance of the sentence and why it has been so widely discussed, why it auto-fills
in Google, and why I am writing this blog post is because Chomsky proved that probabilistic models of grammar are
inadequate, Leila showed us her research work that attempts to predict the
semantics of a word based on what the object is, and she mentioned her model is
not a deterministic model. Similarly, Chomsky showed that there can never be a
completely deterministic model for semantics, and syntax in particular cannot be used for
creating such a model. I think that a good model can be created; just due to
the fact that technology is advancing incredibly fast, and we already have
artificial intelligence such as Siri.