It's obvious that he is expressing an opinion. Those who disagree with him can express an opposing opinion. Just because someone says something, doesn't mean that they need to back it up in any scientific way, especially in a community based around discussing ideas and sharing opinions.
It's obvious that he is expressing an opinion. Those who disagree with him can express an opposing opinion. Just because someone says something, doesn't mean that they need to back it up in any scientific way, especially in a community based around discussing ideas and sharing opinions.