[Corpora-List] No poverty of the stimulus
Mike Maxwell
maxwell at umiacs.umd.edu
Thu Jan 3 05:04:45 UTC 2008
Geoffrey Sampson wrote:
> ...those who investigate the natural sciences can _never_ observe
> "negative instances"...
> Nobody ever saw a stone released near the Earth's surface
> doing other than accelerating towards the ground at about
> 32 ft/sec2... yet Newton managed to work out how gravity
> operates nevertheless
On the contrary, in order to come up with his laws, Newton had to ignore
a good many counterexamples to the idea that objects accelerate towards
the ground at 32 ft/sec**2: birds, leaves in the wind, the moon, for
example--something which Aristotle, for example, had failed to do.
Also (IIRC) it was not until Galileo that people realized a cannon ball
shot from a cannon fell throughout its trajectory (rather than moving
horizontally until it ran out of speed, then falling to the ground--a
perception repeated in modern cartoons).
In fact, all the scientists and philosophers for thousands of years
before Newton had failed to come up with the right theory; whereas every
child comes up with more or less the right theory in a matter of a few
years, and that without standing on the shoulders of the giants who came
before them.
> So why, logically, would working out the grammar of a language
> without negative instances be so much more impossible than working
> out natural laws?
Maybe because languages are orders of magnitude more complex than
Newtonian physics?
--
Mike Maxwell
What good is a universe without somebody around to look at it?
--Robert Dicke, Princeton physicist
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