At the turn of the 1900 century the use of electric light was new and some people viewed it as a dangerous source of light. It was viewed as manmade as opposed to natural, and the effects of its use would, in due time, make people blind. Of course, these are the people who viewed natural as the only appropriate source for anything. All other sources are not natural and, therefore, are harmful. In the case of electric light, time has proven these fear-moguls wrong.
Rice is an excellent food and is eaten worldwide.
But because it lacks vitamin A, in certain parts of the world where foods containing vitamin A are scarce, blindness is quite prevalent. Genetically modified rice containing vitamin A will drastically reduce blindness. Comments on my comments are urged.