It makes perfect sense that expectations of others shape one's life in the way that people tend to act accordingly to their expectation. My gripe with the video is that it ends up looking like another hype on the echo location technique which, impressive it may be, is not the answer to all blindness and mobility related issues many try to make it out to be. If a blind person also has a hearing disability, the EL technique does not work. If the area is super noisy, it doesn't work. I've known a guy who learned echo location and decided that he didn't need to use a white cane any more... and guess what, he fell down stairs alot... Also the thought of making clicky noises constantly throughout one's social life is just not all that appealing :)