Incredible climber

Eric, who is blind, uses a unique invention to climb a rock. This device allows him to 'see' with his tongue. A camera on his sunglasses captures images, which are then translated into sensations on a metal square that Eric feels with his tongue. This helps him navigate and climb the rock successfully.

How does Eric manage to climb the rock despite being blind?

What role does the small camera in the sunglasses play in Eric's climbing?

Describe how the information from the camera helps Eric to understand his surroundings.

What is the significance of the 'little metal square' in Eric's climbing process?

In what way does Eric's invention allow him to reach the top of the rock?