A fully functioning life-form depends on so many things going right. With such precision needing to be met, I'm just surprised that there aren't more debilitati

A fully functioning life-form depends on so many things going right. With such precision needing to be met, I'm just surprised that there aren't more debilitating genetic diseases out there and that so many people are seemingly healthy. Of course, it also has plan B and C in case plan A fail and is remarkable at adapting. Just for example, look at all the people with genetic diseases still hopping along day after day.