On 10/12/2011 7:44 PM, Craig Weinberg wrote:
http://serendip.brynmawr.edu/exchange/node/1676

"As stated above, blindsight is seen clinically as a contrast between
a lack of declarative knowledge about a stimulus and a high rate of
correct answers to questions about the stimulus (1). People suffering
from blindsight claim to see nothing, and are therefore unable to
reach spontaneously for stimuli, cannot decide whether or not stimuli
are present, and do not know what objects look like. In this sense,
they are blind. However, they are able to give correct answers when
asked to decide between given alternatives (1). Studies done with
subjects that exhibit blindsight have shown that they are able to
guess reliably only about certain features of stimuli having to do
with motion, location and direction of stimuli. They are also able to
discriminate simple forms, and can shape their hands in a way
appropriate to grasping the object when asked to try. Some may show
color discrimination as well (2). Subjects also show visual
capacities, including reflexes (e.g. the pupil reacts to changes in
light), implicit reactions and voluntary responses (3). "

Sounds like absent qualia to me.

"people suffering from blindsight claim to see nothing"

So Stathis, Jason, Bruno... how do you know that your computer brain
doesn't have blindsight if it's eyes seem to work? Is it lying when it
says it can't see, or is it seeing without being able to look at what
it is seeing?

Craig


Or is it telling the truth if it says it can see?

Brent

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