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Re: [lojban] baby words, sort of: catlu vs. zgana



That point about the visual cortex is not only unimportant but outright false; vision does not take place exclusively in the visual cortex but is rather dispersed across the entire brain. That is, very nearly every neuron is involved to some extent in vision, and not even with interpretation, but just with generation of the signal itself. It is one of the most complicated things the brain has to manage. So no, even something as simple as motion is probably never detected by the visual cortex exclusively.

But even if it were, where do you draw the line? Can you see an event of love? Of anger? Of thought? All of these, unlike an apple falling, require an inference in addition to signal processing. (Actually, so does the apple falling, based on what I said in the previous paragraph, but we don't notice the inference there.) It seems simpler to say that you can't actually see an event at all, but only the objects involved in the event, since then you don't have to decide what can and can't be seen in the way of events.

mu'o mi'e la latro'a

On Sat, Sep 22, 2012 at 5:44 PM, Pierre Abbat <phma@phma.optus.nu> wrote:
On Saturday, September 22, 2012 15:17:48 Jacob Errington wrote:
> {viska} is a primitive that doesn't require any cognition really. Events
> are on a level much higher than light just reflecting off surfaces into a
> sensor. I would argue that a camera can viska. By contrast, {catlu}
> inherently requires congition and probably volition too, and is definitely
> more appropriate for "seeing" events.

There's enough logic hardwired in the visual cortex to perceive that something
is moving, as well as that it is an apple, without having to move the eyes. So
I consider "mi viska lo nu lo plise cu farlu" to be valid.

"catlu" means to point the eyes at something, to direct one's attention at
something which one sees. "ko viska" would be said to someone whose eyes are
closed or who was blind and can now see. "ko catlu" would be said to someone
whose gaze is pointed somewhere else.

Pierre
--
ve ka'a ro klaji la .romas. se jmaji

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