Step 1: lose sight? There might be blind people who orient themselves by echolocation - maybe not ultrasonic but still pretty cool https://www.discovermagazin

Step 1: lose sight? There might be blind people who orient themselves by echolocation - maybe not ultrasonic but still pretty cool https://www.discovermagazine.com/mind/the-blind-individuals-who-see-by-sound https://www.discovermagazine.com/mind/the-blind-individuals-...