After I read all of the review I didn't saw a single one mentioning the message of the show which I think the following.
In our life we have difficulty to accept that some people seeing things what we regular people cannot see.
This show is intruducing the idea that what if, we all are "blind" with perfect eye sight and we take everything granted but in the another hand probably some people out there with proper sight,who are able to see the real world all around us.
Just think for a second.