A woman, 30 years old, has been blind her entire life. She barely has a clue about the concept of seeing. Yet, one day as she walks in a park with her husband, her vision suddenly becomes bright with life and colors causing her to experience this feeling for the first time ever.
In this situation the woman naturally tells her husband she can see, the latter not being able to believe what he hears. To verify if it's true, he simply shows three fingers and ask:
How many fingers do you see?
Considering that the woman sees for the first time in her life, would she really be able to tell there is 'three' fingers?
After all, she barely knows that the visual cue shown to her is a 'hand' with 'fingers'. She may be able to guess it from the sensations she's been through her entire life, and make the connections between what she sees and what she felt by touching, but would she be able to make the connection so quickly?