I think Glenn is jumping ahead with an answer to a question that wasn't asked: before talking about ways to compensate for a genetically weaker eyesight we have to find out how and why this human ability is distributed. How to work around or what to do with results of studies is a further question. Glenn's position looks even defensive and gives an impression that he's trying to move the debate away from an uneasy topic. It's sad that he chooses this path which is totally unnecessary.
I think Glenn is jumping ahead with an answer to a question that wasn't asked: before talking about ways to compensate for a genetically weaker eyesight we have to find out how and why this human ability is distributed. How to work around or what to do with results of studies is a further question. Glenn's position looks even defensive and gives an impression that he's trying to move the debate away from an uneasy topic. It's sad that he chooses this path which is totally unnecessary.